Hair loss in women is several different conditions

Hair loss in men is largely one condition with one pattern. In women it is not, and that single fact explains why so many women spend a year on a product bought online for a condition they do not have.

The first appointment is mostly diagnostic, and the diagnosis determines everything that follows.

The distinction that matters most

Before the pattern, before the treatment: is the follicle still there?

Non-scarring hair loss leaves the follicle intact. The hair has stopped growing, or is growing thinner, but the structure that makes it survives — which means there is something to treat and the timeline is forgiving.

Scarring hair loss destroys the follicle and replaces it with scar tissue. What is lost is lost. Treatment works by stopping the process before it takes the follicles that are still alive, which makes it the one situation in dermatology where months genuinely matter.

Everything below sorts into those two categories, and it is the reason "I will give it another year and see" is sound advice for some women and the worst possible plan for others.

The common non-scarring patterns

Female pattern hair loss is gradual thinning across the top of the scalp, usually noticed as a widening part or a thinner ponytail, with the frontal hairline largely preserved. This is the one that most resembles the male condition and the one the familiar treatments are designed for. It is progressive, so treatment holds ground rather than restoring it, which again puts the value on starting early.

Telogen effluvium is sudden, diffuse, alarming shedding — handfuls in the shower — typically two to three months after a trigger. Childbirth, a serious illness, a general anaesthetic, a crash diet, significant psychological stress, a new medication. The delay is the signature, and it is why patients so rarely connect the shed to the event that caused it. The good news belongs here: it is usually self-limiting and the hair generally returns.

Alopecia areata is discrete, smooth, round patches with no scaling, appearing over weeks. It is autoimmune, it can recur, and it is not caused by anything you did.

The ones with a clock

Traction alopecia comes from sustained tension — tight braids, weaves, extensions, a lifetime of the same tight ponytail. Early, it is entirely reversible by removing the tension. Left long enough, the follicles scar and it stops being reversible, which is the whole reason it is worth raising before it is obvious.

Central centrifugal cicatricial alopecia begins at the crown and spreads outward, often with tenderness, itching or burning, and it is a scarring process. It is most common in Black women, it is frequently mistaken for pattern thinning or for traction, and early treatment is the difference between holding most of the hair and losing it. Of everything on this page it is the diagnosis where a prompt appointment changes the outcome most, and the one most often arrived at late.

What the appointment involves

Looking at the scalp, not just the hair — with magnification, at the pattern, at the spacing of the follicular openings, and at whether there is redness, scaling or scarring. The openings are the thing: their presence or absence is what separates the two categories above, and it is not something you can assess in a mirror.

Usually a gentle pull test, sometimes photographs to measure against later, often blood work — iron studies, thyroid function, vitamin D — because a treatable deficiency is a common passenger and occasionally the whole explanation. In a suspected scarring process, a small scalp biopsy, because the treatment differs enough to be worth being sure.

What to do before you come

Stop starting new things for about a month if you reasonably can, bring whatever you have already tried, and bring photographs — the ones from a year or two ago are more useful than anything taken today, because the rate of change is a diagnosis in itself.

And come earlier than feels justified. Every condition on this page does better seen early, and two of them stop being treatable at all.