Hair Shedding and Stress: What Is Actually Going On

Yes, a stressful stretch can bring on noticeable hair shedding. The mechanism usually named is telogen effluvium, where a shock to the system pushes an unusually large share of follicles into their resting phase at the same time. Those hairs then let go together a couple of months later, which is why the shedding often arrives well after the hard part is over and can feel like it came from nowhere.

A quick note on what this article is and is not. We are not going to recommend medicines here, and we have taken out the ones this page used to list. Hair loss has several causes that look similar from the outside and need a proper look from someone qualified. What this page can usefully do is explain what is generally understood about the stress side of it, and be honest about the bit most articles skip, which is what to do about the stress itself.

What telogen effluvium is

Hair grows in cycles. Most of your follicles are growing at any given time and a minority are resting, and the resting ones eventually shed to make room for new growth. Losing somewhere in the range of 50 to 100 hairs a day is normal and always has been.

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Telogen effluvium is what happens when a large batch of follicles shifts into the resting phase together. The trigger can be emotional or physical, and the physical ones are the ones people forget: childbirth, surgery, a significant illness, a sharp drop in weight, or a serious change in diet. The lag is the confusing part. The shedding usually shows up two to three months after the trigger, by which point most people have stopped connecting the two.

What it tends to look like

Diffuse rather than patchy is the key distinction. Telogen effluvium generally thins across the whole scalp, so it turns up first as more hair in the brush, in the shower drain and on the pillow, and as a ponytail that feels thinner, rather than as a visible bald spot.

Well-defined bald patches are a different presentation with different causes, alopecia areata among them. So is a receding hairline or thinning confined to the crown. If what you are seeing is patchy, or is accompanied by scalp pain, redness, scaling or other symptoms, that is a doctor’s question, not an internet one.

When to see someone about it

Book an appointment if the shedding is patchy rather than even, if it is severe, if it has been going for more than about six months, if it started without any obvious trigger, or if anything else has changed alongside it.

The reason to go is not only about hair. Thyroid problems, iron deficiency, hormonal changes and some medications all produce shedding that looks much the same from the bathroom floor, and several are straightforward to check with a blood test. A GP or a dermatologist can rule those in or out in a way that no article can.

The part most articles skip

The standard advice is eat well, sleep, exercise, manage your stress. It is fine advice and nobody needs it explained again. Everybody already knows it.

What gets left out is that “manage your stress” is not a technique problem. Most people reading a page like this at 11pm are not short on information about stress. They are in a stretch where the usual coping has stopped working, and reading about hair is the thing they are doing instead of sleeping.

Two things are worth saying plainly. The first is that the shedding itself becomes a stressor, and people check, count and photograph, and that loop is its own weight on top of whatever started it. The second is that with telogen effluvium specifically, the usual course is that it settles on its own once the trigger has passed, so the most useful thing you can often do is take pressure off rather than add another regimen.

FAQs

How long does stress-related shedding last?

It varies a lot between people. The pattern usually described for telogen effluvium is a few months of heavier shedding once it starts, followed by regrowth over a longer period, since hair grows slowly. If it has been running longer than six months, that is worth raising with a doctor rather than waiting it out.

Is stress-related hair loss permanent?

Telogen effluvium is generally described as temporary, and the follicles are not damaged by it. That said, it is not the only cause of thinning and the others behave differently. Which one you are dealing with is a question for someone who can examine your scalp.

Why did the shedding start after the stressful period, not during it?

Because of the lag in the hair cycle. The follicles shift into their resting phase around the time of the trigger, but the hairs do not release until that phase ends, which takes a couple of months. It is the single most confusing thing about it, and the main reason people go looking for a cause that is not there.

Does diet make a difference?

Nutritional deficiencies, iron in particular, are a recognised cause of hair shedding in their own right, and that includes some plant-based diets that are not planned well. A blood test answers it. Eating a broad diet with enough protein and iron is sensible for other reasons too, and our recipes will keep you in that territory, but treat a deficiency as a thing to test for rather than guess at.

Should I stop washing my hair as often?

Washing does not cause telogen effluvium. What washing does is collect several days of shedding into one visible handful, which is why it feels dramatic. Washing less does not reduce how much is shedding, it just moves when you see it.

The short version

Shedding that arrives a couple of months after a hard stretch, spreads evenly across the scalp and is not accompanied by anything else is usually telogen effluvium, and it usually settles. Anything patchy, sudden, prolonged or unexplained is a doctor’s appointment.

And the stress underneath it is worth dealing with for its own sake, hair or no hair. If that is the part that has not shifted, the mind bit is where we cover it.

• hair loss
• stress
• mindset