If you are shedding more hair than usual after an illness, a stressful period or childbirth, one of the first questions is how long it will last. Telogen effluvium (TE) is often temporary, but its course varies from person to person. This guide explains the typical pattern and what can make it last longer.
Why the shedding starts late
In TE, a trigger pushes many hairs into the resting phase at once. Those hairs stay in place for a while before they shed, so the shedding usually begins a couple of months or more after the trigger. By the time you notice it, the trigger may already be over. For the basics, see telogen effluvium: causes, symptoms and treatment.
The typical course
- Acute TE. When there is a single trigger that has passed, such as a fever or surgery, shedding is usually temporary and eases over a period of months. New hairs then start growing back, but because hair grows slowly, it takes longer for the new growth to be noticeable and for length and fullness to return.
- Chronic TE. In some people, shedding continues for longer than about six months or comes and goes. This is more likely when the trigger is ongoing or has not been identified.
These are general patterns, not a promise for any individual. Your own course depends on the cause and your health.
What can make it last longer
- An ongoing trigger, such as continued stress, restrictive eating or an untreated deficiency
- Low iron or thyroid problems that have not been identified
- A new trigger before recovery from the first one
- Pattern hair loss happening at the same time, which TE can unmask. See TE vs androgenetic alopecia.
What helps recovery
- Identifying and addressing the trigger with a physician
- Adequate protein, iron and calories
- Gentle hair care to limit breakage
- Patience: new growth is slow to show
When to get checked
See a doctor if shedding continues beyond several months, if you cannot identify a trigger, if you see patchy bald spots, scalp pain or scarring, or if you have other symptoms such as fatigue, weight change or palpitations. Blood tests for iron and thyroid function are common first steps.
Next step
If you want a licensed provider to review your hair loss, start your online consultation.
Prescription required for prescription treatment. A licensed provider decides whether treatment is appropriate. Individual results vary. Prescribed Essence currently serves patients in California, Colorado, Florida and New York.
