Hair Fall or Hair Loss? Causes, Tests and Treatments That Actually Work

Hair fall vs hair loss

	Hair fall (shedding)	Hair loss (alopecia)
What you see	More hair on comb, pillow, drain	Scalp more visible in a pattern or patches
Coverage	Still even overall	Widening parting, receding corners/crown, or smooth bald patches
Usual cause	A trigger 1–3 months earlier	Genetics/hormones, immune system, traction, infection or scarring
What to do	Find and fix the trigger; be patient	See a dermatologist early

Common types — and what helps

1. Pattern hair loss (androgenetic alopecia)

Genetic sensitivity to hormones like DHT slowly shrinks hair roots. Men notice receding temples or a thinning crown; women notice a widening parting on top. It is not caused by shampoo, oiling or helmets. Proven treatments include minoxidil and, for men, finasteride or dutasteride (Gupta et al., 2022) — all prescription decisions for a doctor, as they have side effects and must be continued to keep results. Women with PCOS need that treated too.

2. Telogen effluvium — sudden diffuse shedding

After high fever (dengue, typhoid, COVID), surgery, childbirth, crash diets, severe stress, iron deficiency or thyroid imbalance, many hairs switch to the resting phase together. Shedding appears 1–3 months later, from all over the scalp. It usually improves within 3–6 months once the trigger is corrected.

3. Alopecia areata — round bald patches

The immune system targets hair roots, causing smooth round or oval patches (scalp, beard or eyebrows). It is not contagious. Many patches regrow, but it can recur — treatment (like steroid injections) should be guided by a dermatologist.

4. Traction alopecia — from tight hairstyles

Tight ponytails, braids, buns, extensions or tight turbans/helmets pull on the hairline. Loosen and rotate styles early — if traction continues for years, loss can become permanent.

5. Breakage — damage, not root loss

Heat styling, bleaching, straightening and rough brushing crack the hair shaft. You see short broken pieces, frizz and hair “stuck” at one length. Reduce heat and chemicals, condition, and handle gently.

6. Fungal scalp infection (tinea capitis)

Itchy, scaly patches with broken hairs (“black dots”), common in children and spread through shared combs and caps. It needs oral antifungal medicine prescribed by a doctor — shampoo alone is not enough.

7. Scarring alopecia

Inflammation destroys the root, leaving smooth, shiny skin without pores, sometimes with itching or burning at the edge. Hair cannot regrow in scarred areas, so early specialist care is essential.

Why Indians often lose hair

• Iron deficiency (very common, especially in women)
• Thyroid disease (under- or over-active)
• PCOS — irregular periods, acne, facial hair with thinning on top
• After fever, surgery or childbirth
• Tight hairstyles; heat and chemical treatments
• Scalp infections and severe dandruff
• Some medicines
• Low protein intake; sometimes vitamin D, B12 or zinc shortfalls

Tests your doctor may consider

Pattern	Common tests
Diffuse shedding	CBC, ferritin, TSH; sometimes vitamin D, B12, zinc
Female pattern thinning with PCOS signs	Hormone tests, glucose/HbA1c, lipids, pelvic ultrasound if advised
Round patches	Often none; sometimes thyroid tests
Scaly patches / black dots	Scraping or hair sample for fungus
Scarring	Scalp biopsy by a specialist

Ferritin below 15 µg/L confirms iron deficiency (WHO 2020); some dermatologists aim higher (often quoted as 30–70 µg/L) in people with ongoing shedding, but evidence for any specific target is limited and the ideal level is debated. Normal blood tests do not rule out pattern hair loss.

Home care that actually helps

• Wide-tooth comb; pat hair dry instead of rubbing; avoid brushing wet hair roughly
• Loosen tight styles and rotate your parting
• Limit straighteners and bleach; use heat protection; space chemical treatments by 8–12 weeks
• Oiling is optional — it conditions the hair but does not regrow it; avoid heavy oiling with dandruff
• Use a mild shampoo; anti-dandruff shampoo (ketoconazole or zinc pyrithione) if you have flakes
• Eat enough protein and iron-rich foods (dals, greens, eggs, meat) with vitamin C; sleep and manage stress

Timelines

• Shedding (telogen effluvium): better in 6–12 weeks after fixing the cause; full volume in 3–9 months.
• Minoxidil and other pattern hair-loss treatments: early shedding can happen; visible results at 3–6 months, better at 6–12 months.
• Alopecia areata: patches may regrow in a few months but can come back.
• Scarring alopecia: lost hair does not return — the aim is to stop it spreading.

See a dermatologist if

• You have bald patches, a receding hairline or a widening parting
• Shedding lasts more than 6 months
• There is itching, pain, scaling, pus or redness on the scalp
• You have irregular periods, acne or excess facial hair with hair thinning
• Eyebrows, beard or body hair are also falling

Sources

1. American Family Physician. Hair Loss: Diagnosis and Treatment (2024) — types of hair loss, tests and treatments
2. Journal of the American Academy of Dermatology. Approach to the patient with hair loss (2023) — history, scalp examination and trichoscopy first
3. Gupta AK et al. Relative efficacy of minoxidil and 5-α reductase inhibitors in male androgenetic alopecia: network meta-analysis, JAMA Dermatology (2022) — minoxidil and finasteride/dutasteride are effective
4. Biotin for Hair Loss: Teasing Out the Evidence, J Clin Aesthet Dermatol (2024) — little evidence for biotin unless you are deficient
5. US FDA. Biotin interference with lab tests — high-dose biotin can distort thyroid and other test results
6. WHO. Guideline on use of ferritin concentrations to assess iron status (2020) — ferritin below 15 µg/L = iron deficiency in adults