Hair Loss: Causes & Treatment
Dermatologist-led overview of how hair loss is evaluated and the evidence behind common treatments.
View AAD reference ›Telogen effluvium is a common form of sudden diffuse hair shedding that may follow fever, COVID, dengue, typhoid, stress, crash dieting, rapid weight loss, postpartum changes, surgery, medication, thyroid imbalance or a nutritional deficiency. Hairsncares helps you identify likely triggers with an AI-powered hair test, then guides you toward supportive routines, doctor-reviewed products, progress tracking and consultation when needed.
Illustrative sample only. AI screening helps identify possible triggers and does not replace a dermatologist's diagnosis.
Telogen effluvium treatment focuses on finding and correcting the trigger. Sudden diffuse hair shedding may happen after fever, COVID, stress, childbirth, dieting, nutritional deficiency, thyroid imbalance or medication. Supportive shampoos, supplements, scalp care and routines may help, but persistent or severe shedding needs dermatologist evaluation. Hairsncares recommends starting with an AI hair test to identify likely triggers.
Diffuse shedding after a trigger such as fever, COVID, stress, dieting, childbirth or deficiency. Trigger correction and patience matter.
AI Summary
Telogen effluvium is one possible hair-loss pattern or trigger. The right next step depends on whether hair is shedding from the root, breaking from the shaft, thinning in a pattern, falling suddenly, persisting for months or appearing in patches.
This page is educational and screening-oriented. It does not diagnose, prescribe or guarantee results. Use the AI Hair Test to organise symptoms, and consult a dermatologist if symptoms are severe, persistent, patchy, painful or progressive.
Best next step: identify the pattern, check likely triggers, review red flags, then choose a routine, product pathway or doctor consultation safely.
Telogen effluvium is a type of diffuse hair shedding where more hairs than usual enter the resting and shedding phase. It often appears 6–12 weeks after a trigger such as fever, illness, stress, childbirth or dieting, and usually causes shedding from all over the scalp rather than one bald patch. It can affect both men and women.
The reassuring part is that it is often temporary — but the trigger needs to be identified and corrected. Chronic or recurrent telogen effluvium that keeps returning, or lasts beyond a few months, needs a medical evaluation rather than products alone.
It helps to tell it apart from look-alikes. Normal shedding is the usual 50–100 hairs a day. Hair breakage is the strand snapping along its length, not shedding from the root. Male or female pattern hair loss is gradual, patterned thinning rather than sudden diffuse shedding. Alopecia areata causes distinct smooth bald patches.
| Type | Common signs | Possible cause | Suggested next step |
|---|---|---|---|
| Acute telogen effluvium | Sudden heavy diffuse shedding | Recent fever, stress, childbirth, dieting | Identify & correct the trigger |
| Chronic telogen effluvium | Diffuse shedding lasting >6 months | Ongoing deficiency or medical issue | Dermatologist evaluation |
| Post-fever shedding | Shedding 6–12 weeks after illness | High fever, dengue, typhoid, infection | Gentle care; usually recovers |
| Postpartum shedding | Heavy shedding after delivery | Hormonal shift after childbirth | Gentle support; monitor |
| Stress-related shedding | Diffuse shedding after stress | Emotional or physical stress, poor sleep | Manage stress; support nutrition |
| Deficiency-related shedding | Diffuse shedding, fatigue | Low iron, vitamin D or B12 | Test & correct deficiency |
| Pattern hair loss | Gradual patterned thinning | Genetic, hormonal | Different treatment path |
| Patchy hair loss | Smooth bald patches | Alopecia areata, other causes | See a dermatologist promptly |
Not sure if it's telogen effluvium? A 90-second AI screen reads your shedding pattern and likely trigger.
Identify My Shedding TypeTelogen effluvium can feel alarming because shedding is so visible. Recognising the signs early helps you stay calm and focus on the trigger rather than panic-buying products.
Sudden increase in hair fall
Lots of hair fall while washing
Hair on pillow, floor or comb
Diffuse thinning rather than patchy baldness
Reduced ponytail volume
Shedding 2–3 months after fever, stress, childbirth or dieting
Scalp usually looks normal
Hairline usually stays preserved
Crown may look thinner due to diffuse loss
Anxiety from seeing daily shedding
Seeing these signs? The sudden hair fall checker reads your shedding and recent history.
Check My Sudden Hair Fall PatternShedding usually traces back to something that happened weeks earlier. Working out which trigger applies is the most important step — treatment follows the cause.
Multiple things happened recently? The trigger finder ranks the most likely cause from your timeline.
Find My TriggerAsk a DoctorTelogen effluvium follows a fairly predictable arc. Knowing the timeline helps you judge whether things are on track or need review.
Fever, COVID, dengue, stress, crash dieting, childbirth, surgery or illness.
You notice a clear, diffuse increase in hair fall — often most obvious on wash days.
Daily shedding can remain elevated for a while. This phase feels worrying but is part of the cycle.
If the trigger has been corrected, shedding commonly begins to settle around this point.
New growth fills in slowly. Visible density improvement usually takes months, not weeks.
If heavy shedding continues past about 6 months, see a dermatologist to check for an ongoing cause.
Want to track where you are on this curve? The progress tracker plots your shedding week by week.
Start Progress TrackerThese are different conditions with different treatments, so distinguishing them early matters.
| Feature | Telogen effluvium | Male / female pattern hair loss |
|---|---|---|
| Onset | Sudden, after a trigger | Gradual, over years |
| Pattern | Diffuse, all over the scalp | Patterned (hairline/crown or parting) |
| Trigger | Fever, stress, childbirth, dieting, deficiency | Genetic, hormonal |
| Hairline | Usually preserved | Recedes (men) / parting widens (women) |
| Crown | Thinner from diffuse loss | Progressive crown thinning |
| Shedding | Marked increase in shed hairs | Gradual miniaturisation |
| Recovery | Often recovers after trigger correction | Ongoing without treatment |
| Treatment focus | Correct the trigger; support | Long-term, doctor-guided therapy |
| Doctor evaluation | If prolonged or severe | Recommended early |
Shedding or pattern loss? The AI test helps tell diffuse shedding from patterned thinning.
Find Out If It Is Shedding or Pattern Hair LossShedding from the root and breakage along the strand look similar in the sink but need different care.
| Feature | Telogen effluvium (shedding) | Hair breakage |
|---|---|---|
| Where it separates | From the root | Along the strand |
| Tip of the hair | Small white bulb at the end | No bulb — a snapped end |
| Hair length | Full-length hairs | Short, uneven broken pieces |
| Hair condition | Often normal strand | Dry, frizzy, damaged strand |
| Product approach | Trigger correction + gentle support | Repair, conditioning, gentler styling |
Shedding, breakage, or both? The AI test checks strand type and scalp signs together.
Check My Hair TypeMost telogen effluvium settles with trigger correction, but some situations need a dermatologist's diagnosis or medical care. Please consult a doctor if any of the following apply.
These products support the scalp and hair while the trigger is corrected. They are supportive, not a cure for the underlying cause.
Supportive everyday cleansing for shedding-prone hair.
Gentle cleansing that does not stress fragile hair.
Gentle support while postpartum shedding settles.
Routines that pair haircare with lifestyle support.
Not sure which category fits your trigger? The Product Finder matches support to your screening result.
Open Product FinderBrowse AllA starting point only. Supportive products do not cure the underlying cause; final suitability depends on the trigger, deficiency status, pregnancy/lactation status and doctor guidance.
| Trigger / concern | Suggested product type | Ingredient examples | Doctor guidance needed? |
|---|---|---|---|
| Post-fever shedding | Gentle shampoo + nutrition support | Mild surfactants, biotin if deficient | If severe or prolonged |
| Post-COVID shedding | Gentle care + supportive serum | Mild actives, peptides | If prolonged |
| Stress shedding | Gentle care + lifestyle support | Soothing scalp actives | If persistent |
| Rapid weight-loss hair fall | Protein & nutrient support | Amino acids, protein, iron if low | Yes — review nutrition |
| Nutritional deficiency fall | Correct deficiency + supplements | Iron, vitamin D, B12, biotin | Yes — test first |
| Postpartum hair fall | Gentle support while it settles | Mild shampoo, supportive serum | If >1 year |
| Thyroid-related shedding | Supportive care + thyroid treatment | Mild actives | Yes — thyroid review |
| Hair fall with dandruff | Medicated anti-dandruff shampoo | Ketoconazole, zinc pyrithione | If severe |
| Breakage with shedding | Repair + gentle support | Amino acids, peptides | Usually no |
| Chronic shedding | Assessment-led support | Depends on findings | Yes — evaluation needed |
Want this mapped to you? Get supportive suggestions based on your own trigger screen.
Get My Personalised PicksSample selection. Prices, ratings and availability shown are placeholders.
Final product suitability depends on trigger, age, gender, pregnancy/lactation status, scalp condition, deficiency status, current medicines and doctor guidance where required. Supportive products do not cure the underlying cause of telogen effluvium. Prescription (Rx) items require a valid prescription. Supplements help mainly when a genuine deficiency exists.
Before adding to cart, confirm the likely trigger so support matches your situation.
Check My Trigger FirstShop All ProductsChoose the routine closest to your trigger. The aim is gentle, consistent support while the body recovers — not many products at once.
Gentle cleansing; nourishing meals; supplements only if a deficiency is confirmed.
Light scalp serum if suitable; prioritise rest while the body recovers.
Mild conditioning; avoid harsh styling and heat on fragile hair.
Track shedding score, photos and ponytail volume; confirm the trigger is resolving.
Gentle cleansing; balanced breakfast; brief stress-reset habit.
Light scalp care; wind-down routine and consistent sleep.
Nourishing care; limit heat and tight styles.
Track shedding and stress notes; most stress shedding settles with time.
Gentle cleansing; protein- and iron-rich meals; supplements if tested low.
Light scalp care; consistent, balanced eating through the day.
Nourishing mask; avoid further restrictive dieting.
Track shedding and nutrition; recheck deficiencies with your doctor.
Mild, gentle shampoo; nutritious meals while nursing.
Light, nursing-safe care; avoid active treatments unless your doctor approves.
Nourishing mask; avoid tight styles that add tension.
Track shedding; most postpartum fall settles over several months.
Medicated anti-dandruff shampoo as directed (often 2–3x weekly).
Soothing scalp serum if advised; avoid heavy products on a flaky scalp.
Gentle conditioner on lengths; keep medicated shampoo on schedule.
Track flaking, itch and shedding together to judge improvement.
Want a routine built around your trigger? Generate a personalised recovery plan in minutes.
Build My Telogen Effluvium Recovery RoutineEvidence labels are a simple guide: strong, moderate, supportive or mainly cosmetic. Supplements help mainly when there is a genuine deficiency or nutritional need — they are supportive, not a cure for shedding.
A B-vitamin involved in hair structure.
Best for: confirmed deficiency.
Caution: limited benefit without deficiency; can affect some lab tests.
Related productsLow iron is a common contributor to diffuse shedding.
Best for: confirmed low iron.
Caution: take only under medical guidance after testing.
Related productsDeficiency is linked to increased shedding.
Best for: confirmed deficiency.
Caution: test before high-dose supplementation.
Related productsLow B12 can contribute to shedding, common in vegetarians.
Best for: confirmed deficiency.
Caution: confirm with a blood test first.
Related productsA mineral involved in hair tissue health.
Best for: confirmed deficiency.
Caution: avoid excess; confirm need first.
Related productsBuilding blocks for the hair strand.
Best for: low-protein diets.
Caution: most useful where protein intake is genuinely low.
Related productsAdequate dietary protein supports hair growth.
Best for: restrictive or crash diets.
Caution: food-first; supplement only if needed.
Related productsA cosmetic complex studied for supporting follicles.
Best for: supportive use during recovery.
Caution: supportive, not a cure for shedding.
Related productsA cosmetic active marketed for density.
Best for: supportive use.
Caution: evidence is limited.
Related productsA common topical haircare ingredient.
Best for: supportive cosmetic use.
Caution: evidence is limited.
Related productsA botanical with some small-study interest.
Best for: supportive cosmetic use.
Caution: patch test; can irritate sensitive scalps.
Related productsAn antifungal used in medicated shampoos.
Best for: dandruff with shedding.
Caution: follow directed frequency; ask a doctor if pregnant/nursing.
Related productsAn anti-dandruff agent in many shampoos.
Best for: dandruff control.
Caution: use as directed.
Related productsHelps remove scalp buildup and flakes.
Best for: flaky, oily scalp.
Caution: can be drying; avoid overuse.
Related productsA vitamin B3 derivative used in scalp care.
Best for: supportive scalp care.
Caution: cosmetic supportive role.
Related productsConditioning actives in repair products.
Best for: fragile, breakage-prone hair.
Caution: supportive cosmetic role.
Related productsThinking about supplements? Test for deficiencies first — a doctor can confirm what you actually need.
Ask a Hair DoctorAll Ingredients| Feature | Telogen effluvium | Pattern hair loss |
|---|---|---|
| Onset | Sudden, after a trigger | Gradual, over years |
| Pattern | Diffuse | Patterned |
| Recovery | Often recovers | Ongoing without treatment |
| Feature | Telogen effluvium | Hair breakage |
|---|---|---|
| Separates | From the root (white bulb) | Along the strand |
| Hair length | Full-length hairs | Short broken pieces |
| Approach | Trigger correction | Repair, gentler care |
| Feature | Post-COVID hair fall | Stress hair fall |
|---|---|---|
| Trigger | COVID infection + stress | Emotional/physical stress |
| Timing | ~2–3 months after illness | Weeks after the stressor |
| Course | Usually recovers over months | Usually recovers as stress eases |
| Feature | Postpartum TE | Female pattern hair loss |
|---|---|---|
| Onset | Sudden, after delivery | Gradual |
| Pattern | Diffuse shedding | Crown thinning, widening parting |
| Course | Usually self-limiting | Progressive without treatment |
| Option | Main role | Best for |
|---|---|---|
| Shampoo | Gentle scalp cleansing | Scalp health, dandruff |
| Supplement | Corrects deficiency | Confirmed low levels |
| Serum | Supportive leave-on care | Scalp/hair support |
| Feature | Acute TE | Chronic TE |
|---|---|---|
| Duration | Less than 6 months | More than 6 months |
| Trigger | Usually identifiable | Often less clear / ongoing |
| Action | Correct trigger, support, monitor | Dermatologist evaluation needed |
| Aspect | Self-care | Dermatologist evaluation |
|---|---|---|
| Best for | Mild, recent, trigger-linked shedding | Prolonged, severe, patchy or unclear cases |
| Includes | Gentle care, nutrition, patience | Examination, blood tests, diagnosis |
| When | First few months with a clear trigger | Beyond 6 months or with red flags |
Still unsure which applies? A dermatologist can confirm the type and rule out other causes.
Ask a Hair DoctorTake AI Test“As a dermatologist, I often see patients panic when sudden hair shedding starts after fever, stress, childbirth, dieting or illness. Telogen effluvium is usually a response of the hair cycle to body stress. The key is to identify the trigger, correct deficiencies or medical issues, support scalp and hair health, and track recovery patiently. Randomly starting many products together can create confusion and delay proper care.”
Worried your shedding isn't settling? Book a consultation for a trigger-based plan.
Consult Dr. Amit's TeamCurated supportive combinations. Timelines are general estimates; results vary and are not guaranteed.
Prefer a kit tailored to your trigger? Build a custom support kit from your screening result.
Build a Custom KitTake AI TestShedding settles gradually, so weekly tracking helps you see the trend and confirm the trigger is resolving.
These references are provided for patient education and do not replace a dermatologist’s diagnosis or individual medical advice.
Dermatologist-led overview of how hair loss is evaluated and the evidence behind common treatments.
View AAD reference ›Patient-education summary of common causes of hair loss and when to seek medical care.
View MedlinePlus reference ›Searchable index of peer-reviewed research on telogen effluvium.
Search PubMed ›Independent systematic reviews assessing the evidence behind hair-loss interventions.
View Cochrane Library ›Diagnosis Pathway
Hair loss treatment should start by identifying the pattern. Pattern thinning, diffuse shedding, patchy loss, sudden shedding and hair breakage need different next steps.
May suggest androgenetic alopecia or DHT-related pattern hair loss. Often gradual and progressive.
Androgenetic Alopecia →May relate to telogen effluvium, deficiency, thyroid, illness, stress, postpartum phase or diffuse pattern loss.
Diffuse Hair Thinning →Often follows a trigger weeks to months earlier, but sudden shedding should not be dismissed if severe or persistent.
Sudden Hair Fall →Persistent shedding needs cause-finding: chronic TE, thyroid, deficiency, medicines, hormones or pattern loss.
Chronic Hair Fall →Patchy loss may be alopecia areata, fungal infection or scarring alopecia and should be dermatologist-led.
Patchy Hair Loss →Breakage is shaft damage, not root shedding. It needs damage repair and styling changes, not root-hair-fall treatment.
Breakage vs Hair Fall →Cause Map
DHT-related follicle miniaturisation causing gradual pattern thinning in men and women.
Read Guide →Diffuse shedding after triggers such as fever, COVID, stress, childbirth, surgery, dieting or deficiency.
Read Guide →Iron, vitamin D, thyroid and nutritional issues can contribute to diffuse shedding and chronic hair fall.
Supplement Safety →Round bald patches need dermatologist diagnosis because causes and treatments differ greatly.
Patchy Hair Loss →Stress, rapid weight loss, illness, smoking and alcohol may contribute, but rarely act alone.
Stress Hair Loss →Breakage from heat, chemicals, friction or styling is different from root hair fall.
Breakage vs Hair Fall →Red Flags
Short-term shedding after a known trigger can be tracked with photos, routine consistency and symptom notes.
Use the AI Hair Test to organise pattern, duration, triggers, scalp symptoms and next-step direction.
Hair fall lasting more than 6 months, worsening crown thinning, a widening parting or unclear shedding needs evaluation.
Patchy loss, scalp pain, pus, crusting, bleeding, scarring-looking skin, sudden severe shedding or child scalp scaling needs prompt medical review.
Timeline
Fever, COVID, stress, surgery, childbirth, crash dieting or major illness may push hairs into the shedding phase.
Shedding may become noticeable after a delay, often once the original trigger already feels over.
Supportive care, trigger correction, nutrition and scalp comfort help recovery, but timelines vary.
Heavy, persistent, patchy or progressive loss should be checked rather than assumed harmless.
Assessment
Low ferritin can contribute to diffuse shedding. Iron should be taken only after testing and doctor advice.
Thyroid imbalance can cause diffuse shedding and needs medical management, not hair products alone.
Vitamin D, protein intake and nutritional history may matter, especially after dieting or illness.
Dermoscopy or scalp examination helps separate pattern loss, shedding, inflammation, fungal causes and scarring risks.
Comparison
| Feature | Pattern Hair Loss | Telogen Effluvium | Hair Breakage |
|---|---|---|---|
| Main sign | Receding hairline, crown thinning, widening parting | Diffuse shedding from all over the scalp | Short broken strands, split ends, roughness |
| Timeline | Gradual and progressive | Often starts after a trigger | Linked to damage, heat, chemicals, friction or styling |
| Root bulb? | May shed miniaturised hairs | Shed hairs often have a root bulb | No root bulb; the shaft snaps |
| Best next step | AI Hair Test + dermatologist review if progressive | Find the trigger + correct the cause | Damage-repair routine + styling changes |
Recovery & Review
Telogen effluvium is diffuse shedding that often follows a trigger and frequently improves once the trigger is corrected, but it is not always harmless. Persistent (chronic) shedding, or shedding with other symptoms, needs assessment, and supplements help only where a deficiency is confirmed.
AI-Guided Next Step
Screen hair fall pattern, duration, triggers, scalp symptoms and next-step direction.
Take AI Hair Test →Explore product directions based on cause, scalp type and safety needs after screening.
Find Products →Build a realistic routine for shedding, pattern thinning, scalp support or breakage.
Build Routine →Track shedding, density, parting, crown and treatment response over time.
Track Progress →Product & Routine Pathway
Supportive shampoos, serums and routines for shedding-related concerns. Products do not cure hair loss.
View Hair Fall Products →Cosmetic serums, deficiency-guided supplements and selected doctor-guided active pathways.
View Growth Products →For dandruff, itching, oiliness or inflammation-linked shedding, scalp care may be the first step.
View Scalp Care →If the issue is shaft snapping rather than root shedding, focus on damage repair and styling changes.
View Damage Care →
Explore More
External links open in a new tab for education. They are not endorsements and do not replace a consultation.
Next Step
Hair loss can come from pattern thinning, telogen effluvium, deficiency, thyroid, stress, post-viral shedding, rapid weight loss, scalp inflammation, patchy alopecia or hair shaft breakage. Start with screening, then choose the right routine or doctor review.
Question not answered here? Ask Dr Amit for instant guidance or book a consultation.
Ask Dr AmitConsult a DoctorDo not panic-buy random products. Take the Hairsncares Sudden Hair Fall AI Test, understand your likely trigger, build a supportive routine, track shedding weekly, and consult a hair doctor if symptoms are severe or persistent.
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