Hair loss after dengue: when it starts and when it stops

Also searched as: hair loss after denguedengue hair fallpost dengue hair loss

In a hospital study of 1,302 dengue patients, 1.15% developed alopecia — 93% of them women — most often during recovery and usually as telogen effluvium; lower platelet counts and hematocrit were linked to higher risk.

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The timeline

Stage	When (typically)	What's happening
Onset	Typically 2–3 months after a high fever	Telogen shedding is noticed a few months after a stressor such as high fever. [American]
Recovery	Fullness returns in 6–9 months	AAD: within six to nine months hair tends to regain normal fullness. [American]

What the dengue study found

Measure	Result
Patients	1,302 diagnosed with dengue [American]
Alopecia	15 (1.15%) [American]
Women	93.33% of those with alopecia [American]
When	Most often during the convalescent phase [American]
Linked to	Lower platelet count and hematocrit [American]

Normal vs. warning signs

Commonly normal

Diffuse shedding starting a couple of months after the fever
White bulbs on shed hairs

Warning signs — get checked

Patches or smooth bald spots
Scalp pain, redness, burning or scaling
Loss of eyebrows, eyelashes or body hair
Shedding still heavy after 6 months

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What may help

Ask whether a blood count or iron check makes sense if you are still tired.
Eat enough protein while you recover.

Related triggers

Life events

Ferritin & iron

Frequently asked questions

Is hair loss after dengue normal?

It is uncommon — 1.15% in a 1,302-patient study — and usually temporary telogen effluvium.

How long does hair loss after dengue last?

Telogen shedding usually settles and fullness returns within 6–9 months, per the AAD.

Why did I lose hair weeks after the fever?

Hair shedding from a high fever is typically noticed a few months later because of the hair cycle.

Sources

American Journal of Tropical Medicine and Hygiene. Low Platelet Count and Hematocrit as Risk Factors for Alopecia in Dengue Fever (n=1,302)
American Academy of Dermatology. Do you have hair loss or hair shedding?
DermNet (Chang F-L, Oakley A, 2019). Telogen effluvium