Medical Review: This article has been reviewed for medical accuracy by Dr. Fazal e Rabi and our Editorial Team. Last Updated: [Current Date]
Hair loss is never easy to cope with, but when it involves permanent scarring, the emotional toll can be even greater. Among the various types of hair loss, Central Centrifugal Cicatricial Alopecia (CCCA) stands out as one of the most challenging conditions to manage. It is a progressive form of scarring alopecia that primarily affects Black women over the age of 30, although it can occur in men and women of other ethnic backgrounds as well.
- Understanding CCCA: What Exactly Is It?
- Recognizing the Early Symptoms of CCCA
- Primary Symptoms You Should Watch For
- Additional Symptoms That May Accompany Hair Loss
- Why Does CCCA Happen? Understanding the Causes
- How Hair Follicle Destruction Occurs
- Potential Contributing Factors
- How CCCA Is Diagnosed
- Clinical Examination
- Diagnostic Tests Commonly Used
- Treatment Options for Central Centrifugal Cicatricial Alopecia
- Anti-Inflammatory Treatments for CCCA
- Topical Corticosteroids
- Oral Corticosteroids
- Corticosteroid Injections
- Calcineurin Inhibitors
- Antibiotic and Immunomodulatory Therapy
- Tetracycline Antibiotics
- Immunomodulatory Approaches
- Emerging Treatments and New Research
- Metformin
- JAK Inhibitors (e.g., Baricitinib)
- Vitamin D Supplementation
- Platelet-Rich Plasma (PRP) Therapy
- Hair Care Modifications: Protecting Your Follicles
- Avoiding Tight Hairstyles
- Reducing Chemical Exposure
- Limiting Heat Styling
- Gentle Cleansing and Moisturizing
- Sleep Protection
- Prevention and Long-Term Management Strategies
- Gentle Hair Care as a Preventive Tool
- Regular Scalp Monitoring
- Scalp Health Maintenance
- Can CCCA Hair Loss Be Reversed?
- The Role of Early Intervention
- When Hair Loss Becomes Permanent
- Individual Variation
- Future Possibilities
- Living with CCCA: Coping and Thriving
- Psychological and Emotional Support
- Cosmetic and Practical Solutions
- Lifestyle Adaptations
- When to Seek Professional Help
- Warning Signs That Need Urgent Attention
- The Importance of Dermatology Specialists
- Taking Action Against Hair Loss: A Patient’s Roadmap
- The Future of CCCA Research and Treatment
- Stem Cell Therapy and Follicle Regeneration
- Gene-Based Therapies
- Improved Drug Therapies
- Public Awareness and Education
- Conclusion: Managing CCCA with Knowledge and Action
- FAQs About Central Centrifugal Cicatricial Alopecia (CCCA)
- 1. Is CCCA only found in Black women?
- 2. Can changing hairstyles alone stop CCCA?
- 3. How long does it take to see results from treatment?
- 4. Are wigs and weaves safe to wear with CCCA?
- 5. Is there hope for a cure in the future?
- Final Words
Unlike more common types of hair loss, such as androgenetic alopecia or telogen effluvium, CCCA does not simply cause hair thinning or shedding that may grow back. Instead, it destroys the hair follicles themselves, replacing them with scar tissue. Once this process occurs, the follicles cannot regenerate, which means that early recognition and prompt medical care are crucial in slowing or halting the disease before irreversible bald patches appear.
In this comprehensive guide, we’ll break down everything you need to know about CCCA: from symptoms and underlying causes to diagnostic methods, treatments, and long-term management strategies. By the end, you’ll not only understand how this condition develops but also how to take proactive steps to protect your scalp health and preserve your hair.
Understanding CCCA: What Exactly Is It?
Central centrifugal cicatricial alopecia is a scarring type of hair loss that begins at the crown of the scalp—the central point at the top of your head—and gradually spreads outward in a circular, expanding pattern. This characteristic growth pattern gives the condition its name:
- Central – it starts in the center of the scalp.
- Centrifugal – it spreads outward like ripples in water.
- Cicatricial – it involves scarring that permanently destroys hair follicles.
- Alopecia – the medical term for hair loss.
Historically, CCCA was often called “hot comb alopecia”, as it was strongly associated with hairstyling practices such as using hot combs, chemical relaxers, or tight hairstyles. While these styling methods may still play a role, modern research has revealed that the condition is far more complex, involving genetic, autoimmune, and possibly environmental factors.
Importantly, CCCA is not just about aesthetics—it can have physical, emotional, and social consequences. The scarring itself may cause itching, burning, or pain, while the visible hair loss can significantly affect self-esteem and confidence.
Recognizing the Early Symptoms of CCCA
The key to managing CCCA lies in catching it early. Unlike some forms of hair loss that present with sudden shedding, CCCA often starts subtly and progresses gradually over months or even years.
Primary Symptoms You Should Watch For
- Hair Breakage Before Hair Loss
One of the earliest warning signs is increased hair breakage at the crown. You might notice short, broken hairs mixed with longer strands when you comb, brush, or wash your hair. This happens because CCCA weakens the hair shaft itself, making it more fragile and prone to snapping. - Changes in Scalp Texture
Even before noticeable bald spots appear, the scalp may feel different. Some people describe the affected area as scaly, bumpy, or crusty. These changes are signs of inflammation happening beneath the surface. - Circular Pattern of Thinning
Unlike diffuse thinning, which affects the whole scalp evenly, CCCA progresses in a distinct circular or oval pattern. It starts at the crown and expands outward, leaving behind an enlarging patch of thinning hair or smooth scalp. - Smooth, Shiny Areas of Baldness
As the disease advances, scar tissue replaces destroyed follicles, leaving the scalp glossy and hairless. Once this happens, regrowth is unlikely without surgical intervention, such as hair transplantation.
Additional Symptoms That May Accompany Hair Loss
- Itching or burning sensations on the scalp.
- Tenderness or soreness, particularly in areas where hair is thinning.
- Pins-and-needles (paresthesia) sensations, which some patients describe as uncomfortable prickling.
It’s important to note that not everyone experiences discomfort. In some cases, hair loss progresses quietly without pain or itching, which makes regular self-examinations and awareness even more critical.
Why Does CCCA Happen? Understanding the Causes
The exact cause of CCCA is still not fully understood, but researchers believe it results from a combination of genetic predisposition, inflammatory processes, hair care practices, and possibly infections.
How Hair Follicle Destruction Occurs
Normally, hair follicles cycle through phases of growth, rest, and shedding. In CCCA, this cycle is disrupted because inflammation attacks the follicles, damaging them at the root. Instead of healing, the body replaces these follicles with scar tissue—a process called cicatrization. Once scarred, follicles cannot produce new hairs, making the hair loss permanent.
Potential Contributing Factors
- Hair Care Practices
- Historically, frequent use of hot combs, relaxers, and tight braids or weaves was believed to cause CCCA.
- While these practices may contribute to scalp stress, not everyone who uses them develops CCCA, suggesting they are risk factors rather than direct causes.
- Genetic Susceptibility
- Studies show that women with a family history of CCCA are more likely to develop the condition.
- Certain gene mutations related to inflammation and wound healing may play a role in making follicles more vulnerable.
- Autoimmune Reactions
- Some researchers suspect that CCCA may involve the immune system mistakenly attacking healthy follicles, similar to other autoimmune diseases.
- Possible Infections
- Though less common, scalp infections may trigger the inflammatory process that leads to scarring. However, no single pathogen has been consistently linked to CCCA.
Ultimately, CCCA is likely multifactorial, meaning it develops from a combination of influences rather than one single cause.
How CCCA Is Diagnosed
Because CCCA can look similar to other types of alopecia, such as traction alopecia or lichen planopilaris, an accurate diagnosis requires a professional evaluation by a dermatologist.
Clinical Examination
A dermatologist will begin by:
- Inspecting the scalp for patterns of hair loss—especially the central thinning pattern typical of CCCA.
- Checking for signs of scarring, such as smooth, shiny areas where hair cannot regrow.
- Assessing scalp texture, looking for bumps, scales, or redness.
- Taking a detailed medical and hair care history, including onset, progression, family history, and symptoms like pain or itching.
Diagnostic Tests Commonly Used
- Hair Pull Test
The doctor gently tugs on a cluster of hairs to see how easily they come out. This helps determine whether hairs are breaking at the shaft or shedding from the root. - Blood Tests
These may be ordered to rule out underlying conditions like thyroid disease, lupus, or nutritional deficiencies, all of which can cause hair loss. - Scalp Biopsy
This is the gold standard for diagnosing CCCA. A small piece of scalp tissue is removed under local anesthesia and examined under a microscope. The biopsy typically reveals inflammation around hair follicles, destruction of follicular units, and replacement with scar tissue.
Early and accurate diagnosis is essential because once scarring sets in, treatment becomes less effective. The sooner the condition is identified, the better the chances of slowing progression and preserving existing follicles.
Treatment Options for Central Centrifugal Cicatricial Alopecia
While there is no single cure for CCCA, there are effective treatment strategies that can reduce inflammation, slow or stop disease progression, and in some cases, encourage partial hair regrowth.
Dr. Susan Taylor, a leading dermatologist in the field, emphasizes:
“Early diagnosis and intervention are crucial in managing CCCA and preventing irreversible hair loss.”
Studies also show that patients who seek treatment within the first year of noticing symptoms have a significantly higher chance of stabilizing the condition compared to those who wait until advanced scarring has occurred.
Treatment typically combines medical therapies with lifestyle modifications, and plans are tailored to the severity and progression of the disease.
Anti-Inflammatory Treatments for CCCA
Because inflammation plays a central role in CCCA, most treatment strategies focus on calming the immune response and reducing damage to the hair follicles. The earlier these treatments are started, the better the outcomes.
Topical Corticosteroids
These are often the first-line treatment for CCCA. When applied directly to the scalp, corticosteroid creams, ointments, or solutions work to reduce swelling, redness, and irritation around the follicles.
- How they work: They suppress the local immune response that drives follicular destruction.
- Application: Usually prescribed for daily or weekly use depending on severity.
- Pros: Easy to use and targeted directly at problem areas.
- Cons: Long-term use can thin the skin, so doctors often rotate with other medications.
Oral Corticosteroids
For patients with rapidly progressing hair loss, short courses of oral corticosteroids may be prescribed. These provide stronger systemic anti-inflammatory effects but must be carefully monitored due to potential side effects like weight gain, mood changes, and bone thinning.
Corticosteroid Injections
Another highly effective option involves injecting corticosteroids directly into the affected areas of the scalp. This is usually performed every 6–12 weeks in a dermatologist’s office. Patients often see noticeable improvement in scalp discomfort and stabilization of hair loss after a few sessions.
Calcineurin Inhibitors
Medications such as tacrolimus and pimecrolimus offer an alternative to corticosteroids. These are topical treatments that reduce inflammation without the risk of skin thinning, making them a good option for long-term management.
Antibiotic and Immunomodulatory Therapy
Interestingly, some antibiotics are used not for their infection-fighting properties but for their ability to reduce inflammation in CCCA patients.
Tetracycline Antibiotics
Medications like doxycycline and minocycline are frequently prescribed.
- Anti-inflammatory benefits: They calm follicular inflammation and can help slow the spread of scarring.
- Treatment duration: Often prescribed for several months, sometimes up to a year.
- Additional benefits: Doxycycline can also help with secondary scalp conditions such as folliculitis (inflammation of hair follicles).
Immunomodulatory Approaches
In more severe or stubborn cases, doctors may turn to systemic medications that modulate the immune system:
- Hydroxychloroquine (commonly used in autoimmune diseases like lupus) has shown some benefit in managing scarring alopecia.
- Methotrexate and mycophenolate mofetil are less common but sometimes considered in difficult cases under close medical supervision.
These treatments aren’t first-line options due to potential side effects but can be valuable tools for patients with aggressive disease.
Emerging Treatments and New Research
Research into CCCA is ongoing, and in recent years, several new therapies and experimental options have shown promise.
Metformin
Traditionally known as a diabetes medication, metformin has demonstrated potential anti-inflammatory benefits that may help slow scarring in CCCA. Early clinical studies are promising, though more research is needed.
JAK Inhibitors (e.g., Baricitinib)
These medications, originally developed for conditions like rheumatoid arthritis, work by blocking certain immune pathways involved in inflammation. Small-scale studies suggest that JAK inhibitors may stimulate regrowth in some types of scarring alopecia, including CCCA.
Vitamin D Supplementation
Low vitamin D levels have been linked to various forms of hair loss, including CCCA. Supplementation may help improve scalp health, especially for individuals with documented deficiency.
Platelet-Rich Plasma (PRP) Therapy
Although more commonly used for non-scarring hair loss, PRP injections—where a patient’s own blood is processed to concentrate growth factors and then re-injected into the scalp—are being studied as a potential supportive therapy in CCCA.
While these treatments are not yet standard care, they represent hope for future advancements in managing this condition.
Hair Care Modifications: Protecting Your Follicles
Beyond medical treatments, everyday hair care practices play a critical role in preventing further damage and helping existing treatments work more effectively.
Avoiding Tight Hairstyles
Braids, weaves, ponytails, and buns that pull tightly at the scalp put mechanical stress on hair follicles. Over time, this can accelerate follicle damage and worsen CCCA. Instead, choose looser, protective styles that minimize pulling.
Reducing Chemical Exposure
Chemical relaxers, perms, and frequent dyeing can weaken the hair shaft and irritate the scalp. If you use these treatments:
- Space them out (every 8–12 weeks instead of more frequently).
- Always go to a professional who understands scalp health.
- Follow up with deep-conditioning treatments to restore moisture.
Limiting Heat Styling
Flat irons, blow dryers, and hot combs can dry out the scalp and damage already fragile hair. Use them sparingly and always apply a heat protectant spray. Whenever possible, let your hair air-dry naturally.
Gentle Cleansing and Moisturizing
Opt for sulfate-free shampoos that don’t strip natural oils, paired with moisturizing conditioners. Light scalp oils, like jojoba or argan oil, can help soothe irritation and keep the scalp hydrated.
Sleep Protection
Sleeping on silk or satin pillowcases or using a satin bonnet reduces friction, which helps protect fragile hair from breakage while you rest.
Dr. Amy McMichael, a dermatologist specializing in hair disorders, stresses:
“Lifestyle modifications, such as avoiding tight hairstyles and harsh chemicals, can play a significant role in preventing further damage.”
Prevention and Long-Term Management Strategies
Since CCCA is a chronic condition that can flare up periodically, long-term prevention and monitoring are just as important as initial treatment.
Gentle Hair Care as a Preventive Tool
- Rotate between low-manipulation hairstyles.
- Limit the use of chemical relaxers and dyes.
- Incorporate scalp massages with gentle oils to increase circulation and reduce dryness.
Regular Scalp Monitoring
- Self-checks: Examine your scalp monthly in bright lighting to spot any new thinning, redness, or bumps.
- Professional follow-ups: Dermatologists usually recommend checkups every 3–6 months during treatment, then annually once the condition stabilizes.
Scalp Health Maintenance
- Keep your scalp hydrated with non-comedogenic oils or medicated serums.
- Protect your scalp from sun damage using hats, scarves, or SPF sprays formulated for the scalp.
- Maintain a balanced diet rich in vitamins, minerals, and protein, which supports overall hair and scalp health.
By combining medical care with these preventive strategies, patients can often slow progression and preserve as much hair as possible.
Can CCCA Hair Loss Be Reversed?
One of the most common and heartbreaking questions people ask after a CCCA diagnosis is: “Will my hair grow back?” The answer isn’t simple, because it depends largely on how early the condition is detected and how much follicle damage has already occurred.
The Role of Early Intervention
If treatment begins before significant scarring develops, there is often a chance for partial regrowth. In these cases, medications such as corticosteroids, antibiotics with anti-inflammatory properties, or emerging therapies like JAK inhibitors can help calm inflammation, allowing surviving follicles to resume their normal function.
For example, some patients who started treatment within the first year of noticing symptoms experienced visible regrowth in thinning areas. This underscores the importance of not waiting until bald patches are obvious to seek help.
When Hair Loss Becomes Permanent
Once follicles are completely destroyed and replaced with scar tissue, hair cannot regrow naturally. Scar tissue lacks the complex structures needed to produce new hair. At this stage, medical treatments can only prevent further progression, not reverse the damage already done.
Individual Variation
Responses to treatment differ widely:
- Some patients stabilize quickly and even see regrowth.
- Others only slow the disease, but without regrowth.
- A small percentage continue progressing, despite aggressive treatment.
Factors such as genetics, overall health, and strict adherence to treatment all influence outcomes.
Future Possibilities
While current medicine cannot reverse scarring, ongoing research into hair follicle regeneration and stem cell therapy offers hope. Scientists are investigating ways to re-create follicles in scarred skin, which could one day make permanent hair restoration possible for CCCA patients.
Living with CCCA: Coping and Thriving
CCCA doesn’t just affect the scalp—it can deeply impact emotional well-being, confidence, and daily life. Living with a chronic condition means balancing treatment, self-care, and emotional resilience.
Psychological and Emotional Support
Hair loss is often tied to self-identity, especially for women. It’s normal to feel sadness, frustration, or embarrassment. Seeking support is not a sign of weakness—it’s a powerful step toward healing.
- Support groups: Connecting with others who understand your struggles can reduce feelings of isolation.
- Counseling or therapy: Speaking with a mental health professional can help you navigate anxiety, depression, or body-image concerns.
- Open conversations: Sharing your condition with close friends or family can build a network of support.
Cosmetic and Practical Solutions
For those with visible hair loss, cosmetic solutions can boost confidence:
- Strategic hairstyling – A skilled stylist can create looks that minimize the appearance of thinning.
- Wigs and hairpieces – Modern wigs are lightweight, breathable, and natural-looking. They can be worn daily or for special occasions.
- Scalp micropigmentation (SMP) – This technique uses specialized tattooing to mimic the appearance of hair follicles, creating the illusion of fuller coverage.
- Temporary concealers – Hair fibers and sprays can thicken thinning areas instantly for short-term confidence boosts.
Lifestyle Adaptations
Small lifestyle changes can make living with CCCA easier:
- Wearing headscarves or hats not only protects the scalp from sun but also provides fashionable styling options.
- Using gentle hair care products reduces irritation and enhances comfort.
- Scheduling regular dermatology checkups ensures your treatment stays effective.
By combining medical treatment with emotional support and cosmetic options, many individuals with CCCA continue to thrive and lead full, confident lives.
When to Seek Professional Help
Some people try to manage early hair loss on their own, but with CCCA, delays can mean permanent damage. Knowing when to consult a dermatologist is crucial.
Warning Signs That Need Urgent Attention
- Rapid progression of hair loss at the crown.
- Severe or persistent scalp pain, burning, or itching.
- Appearance of shiny, smooth patches of scalp where hair once grew.
- Signs of infection such as redness, swelling, or pus.
- Emotional distress or significant impact on mental health due to hair loss.
The Importance of Dermatology Specialists
Not all doctors are equally trained in diagnosing hair disorders. A board-certified dermatologist, ideally one who specializes in hair and scalp conditions, will have the expertise to:
- Perform a detailed scalp exam and biopsy.
- Create a personalized treatment plan.
- Monitor progress and adjust medications as needed.
Early professional intervention not only improves treatment outcomes but also provides patients with peace of mind and reliable guidance.
Taking Action Against Hair Loss: A Patient’s Roadmap
If you suspect you may have CCCA or have recently been diagnosed, here is a step-by-step roadmap to guide you:
- Book a Dermatology Appointment Immediately
Don’t wait for bald patches to worsen—seek professional evaluation as soon as you notice symptoms like breakage or tenderness at the crown. - Follow Medical Treatment Consistently
Whether it’s topical corticosteroids, oral antibiotics, or injections, consistency is key. Skipping treatments can allow inflammation to flare up again. - Adopt Scalp-Friendly Hair Care Practices
Shift away from harsh chemicals, tight hairstyles, and excessive heat. Instead, use gentle cleansing routines and protective styling. - Monitor and Record Progress
Take monthly scalp photos in good lighting. This helps track changes and provides useful information for your dermatologist. - Build a Support System
Surround yourself with supportive friends, family, or online communities who understand the emotional toll of hair loss. - Stay Updated on New Research
Advances in medicine are happening rapidly. Staying informed helps you explore new options when they become available.
This proactive approach empowers patients to take charge of their condition rather than letting it control them.
The Future of CCCA Research and Treatment
While current treatments focus on halting progression, the future looks hopeful for more advanced solutions.
Stem Cell Therapy and Follicle Regeneration
Scientists are working on ways to grow new hair follicles in the lab and transplant them into scarred areas. Though still experimental, this research could eventually provide a permanent cure for scarring alopecia.
Gene-Based Therapies
Since genetics appear to play a role in susceptibility, researchers are studying specific genetic markers associated with CCCA. Understanding these could lead to personalized medicine approaches tailored to each patient’s risk profile.
Improved Drug Therapies
Ongoing studies into JAK inhibitors, metformin, and other novel medications hold promise for better long-term outcomes with fewer side effects.
Public Awareness and Education
As awareness grows, more women are seeking early help. Public health campaigns and education efforts among hairstylists, beauty professionals, and communities are helping reduce stigma and improve early detection.
The ultimate goal is to shift CCCA from a frustrating, poorly understood condition into one that is widely recognized, quickly diagnosed, and effectively treated.
Conclusion: Managing CCCA with Knowledge and Action
Central Centrifugal Cicatricial Alopecia (CCCA) is more than just a cosmetic issue—it is a serious medical condition that requires timely recognition and intervention. While its exact causes are still being unraveled, we now know that CCCA involves a complex interplay of genetics, inflammation, and scalp stressors such as tight hairstyles or harsh chemicals.
The most important takeaway is that early diagnosis changes everything. If you notice breakage, tenderness, or thinning at your crown, don’t dismiss it as routine shedding or stress-related hair loss. The earlier you seek medical help, the more likely it is that your follicles can be saved and progression slowed.
Treatment isn’t just about medications—it’s also about lifestyle. Protective styling, gentle hair care, regular scalp monitoring, and emotional support all work together with medical therapies to preserve scalp health and maintain confidence.
Living with CCCA can feel overwhelming, but you are not powerless. With the right combination of dermatology care, healthy habits, and emotional resilience, many individuals stabilize the condition and continue to lead full, confident lives. And with new research on the horizon—like stem cell therapy, gene-based treatments, and innovative drugs—the future holds hope for even more effective solutions.
If you suspect CCCA, don’t wait. Take action today by consulting a dermatologist, protecting your scalp, and exploring treatment options. Your journey may require patience, but with persistence, you can manage this condition and safeguard your well-being.
FAQs About Central Centrifugal Cicatricial Alopecia (CCCA)
1. Is CCCA only found in Black women?
No. While CCCA is most common among women of African descent, especially those over 30, it can affect men and women of other ethnic backgrounds as well. However, due to differences in hair structure, cultural styling practices, and possible genetic factors, Black women are disproportionately affected.
2. Can changing hairstyles alone stop CCCA?
Changing hairstyles—such as avoiding tight braids, weaves, or frequent chemical relaxers—can certainly reduce scalp stress and slow progression. However, once CCCA has begun, medical treatment is usually necessary to control inflammation and prevent scarring. Hair care modifications alone are rarely enough to stop the condition completely.
3. How long does it take to see results from treatment?
Results vary, but most patients need to wait several months before noticing improvement. Hair grows slowly, so regrowth is never immediate. In many cases, the first signs of progress include reduced tenderness, less breakage, and stabilization of hair loss. Visible regrowth—if possible—may take 6–12 months with consistent treatment.
4. Are wigs and weaves safe to wear with CCCA?
Yes, wigs and weaves can be safe, but they must be applied carefully. Avoid styles that pull on existing hair or put stress on the scalp. Glue-free wigs and loose-fitting units are preferable. Always give your scalp time to rest between installations, and maintain proper hygiene to prevent irritation.
5. Is there hope for a cure in the future?
Absolutely. Current treatments focus on slowing progression and reducing inflammation, but research is rapidly evolving. Stem cell therapy, follicle regeneration, and gene-based medicine are all being investigated as potential long-term solutions. While a complete cure isn’t available yet, the outlook is far more hopeful than it was even a decade ago.
Final Words
Central Centrifugal Cicatricial Alopecia may be complex, but it is manageable with the right knowledge and care. By combining medical treatments, hair care adjustments, and emotional support, individuals can take control of their condition and live confidently despite the challenges.
If you’ve noticed early warning signs, don’t wait—take action today. Consult a dermatologist, explore treatment options, and protect your scalp health. Remember, the earlier you intervene, the more hair you can potentially save.
Medical Disclaimer:
The content on WellHealthOrg.com is for informational and educational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
Our content is rigorously fact-checked by our 13-member Editorial Team under the supervision of Dr. Fazal e Rabi.
