Alopecia or Hair Loss: Cause, types, treatment

Hair loss is a multifactorial concern affecting individuals across all age groups and genders, with profound effects on self-esteem and psychological well-being. While shedding up to 100 hairs daily is normal, recognizing early warning signs and underlying causes is vital to initiating timely and effective treatment. This guide walks you through types of hair loss, how to assess its severity, common causes, available treatments, and when to consult a dermatologist.

Introduction: Understanding Hair Loss

Hair grows in a cyclic manner—through anagen (growth), catagen (transition), and telogen (resting) phases. Disruptions in this cycle from internal or external factors can lead to increased shedding or thinning. Common culprits include nutritional deficiencies, hormonal imbalances, genetic predisposition, autoimmune conditions, and environmental insults such as harsh chemicals or styling habits.

Early recognition of the cause and type of hair loss is the first step towards an effective treatment plan.

How to Know if Hair Fall is Severe

Hair loss of up to 100 strands per day is physiologically normal, yet it’s difficult to measure this precisely in day-to-day life. Here are seven warning signs that suggest your hair fall may be excessive and that a consultation with a dermatologist is warranted:

• Bunch of hair during combing or shampooing

• Hair on your pillow, bedding, or floor

• Thinning hair strands or noticeable volume reduction

• Visible bald patches or scalp visibility

• In men, recession of the frontal hairline and broadening of the forehead

• In women, widening of the central parting and a decrease in ponytail volume

• Positive pull test: Grasp about 100 hair strands and pull gently—if more than six hairs come out, active hair loss is likely

If you notice any of these signs, it is time to investigate the type of hair loss you are experiencing.

Type of hair loss

Each type of hair loss has a distinct pattern and cause, and hence requires a specific management strategy:

1. Telogen Effluvium

Characterized by diffuse shedding from all over the scalp, telogen effluvium often follows physical or emotional stress, illness, nutritional deficiencies, or medication changes. It’s the most common type in females and is generally reversible with correction of underlying causes.

2. Female Pattern Hair Loss (FPHL)

Also known as female androgenetic alopecia, FPHL involves gradual thinning, often seen as widening of the central parting. It is primarily genetic but may be aggravated by PCOD or hormonal imbalance. Early treatment is crucial to slow progression.

3. Male Pattern Hair Loss

Seen as a receding hairline and crown thinning, this is an irreversible condition that often runs in families. The hallmark feature is the gradual miniaturization of hair follicles due to sensitivity to dihydrotestosterone (DHT).

4. Patchy Hair Loss

Usually caused by scalp disorders such as alopecia areata, lichen planus, or discoid lupus erythematosus (DLE). It presents as smooth, circular bald patches. Urgent evaluation is necessary to halt progression.

Watch this video for quick overview of hair loss types:

What Causes Telogen Effluvium?

Diffuse Hair loss or Telogen Effluvium is often multifactorial as discussed. While Male and female pattern hair loss often runs in families.

1. Acute Stress

Significant stress (physical or emotional), infections (e.g., typhoid, COVID-19), surgery, or trauma can shift hair follicles into the telogen phase prematurely.

2. Chronic Illness

Conditions like cancer, chronic liver/kidney disease, or tuberculosis can cause persistent hair loss.

3. Hormonal Imbalances

Hypothyroidism, PCOD, postpartum changes, or discontinuation of hormonal pills may disturb hair cycles. Look for:

• Irregular periods

• Weight gain

• Acne on the jawline

• Excess facial hair

4. Postpartum Hair Loss

Hair loss begins 3–6 months after delivery due to the resumption of the normal hair cycle after a pregnancy-induced pause in shedding.

5. Nutritional Deficiencies

A lack of protein, iron, vitamin D, zinc, or biotin can significantly affect hair growth.

6. Medications

Common culprits include drugs for thyroid disorders, psychiatric illnesses, hormonal therapies, and blood pressure medications.

7. Mental Stress

Intense psychological stress, such as grief or job loss, can lead to hair fall.

8. Idiopathic

Some women aged 30–60 experience diffuse thinning without a known cause—this must be evaluated to rule out subtle deficiencies or hormonal triggers.

Treatment Options for Hair Loss

Treatment must be tailored to the underlying diagnosis and may involve the following:

1. Topical Therapies

• Minoxidil: FDA-approved and effective in both genders

• Topical steroids or immunomodulators for alopecia areata

• Caffeine or peptide serums for mild thinning

2. Oral Medications

• Finasteride/Dutasteride for male-pattern hair loss

• Spironolactone or oral contraceptives in women with hormonal issues

• Nutraceuticals such as biotin, iron, vitamin D, and zinc

3. In-Clinic Procedures

• Platelet-Rich Plasma (PRP)

• Microneedling with growth factors

• Low-Level Laser Therapy (LLLT)

4. Hair Transplantation

For advanced cases of androgenetic alopecia, surgical restoration is a permanent solution.

5. Lifestyle and Diet

Focus on a balanced diet, scalp care, avoiding tight hairstyles, and stress reduction techniques.

When to See a Dermatologist

Consult a dermatologist if you notice:

• Sudden, excessive, or patchy hair fall

• Thinning or visible scalp

• Worsening despite home remedies for 2–3 months

• Family history of hair loss

• Associated signs of systemic or hormonal disorder

• Consideration of advanced therapies like PRP or transplant

Final Word

Hair loss is common but complex. Identifying the type, understanding the cause, and initiating early, targeted treatment is essential for hair regrowth and preservation. A dermatologist’s evaluation remains the gold standard for diagnosis and personalized care.