Hair thinning

Reviewed by Dr Ong Jin Khang

Hair thinning is a symptom, not a diagnosis. Pattern hair loss, a shedding phase after illness or stress, iron or thyroid deficiency, traction from years of tight styling, and scalp disease all end the same way in the mirror, and they are treated entirely differently. Starting treatment before knowing which one is at work wastes the one thing hair loss does not give back: time.

Thinning is a symptom. The cause is the diagnosis.

What is actually going on

Pattern hair loss, in both men and women, is a gradual miniaturisation of follicles driven by genetics and hormones. Telogen effluvium is different: a synchronised shedding two to three months after a trigger, illness, childbirth, crash dieting, severe stress, that usually recovers on its own. Deficiencies of iron, vitamin D or thyroid hormone thin hair diffusely and reverse when corrected. Traction and scarring conditions damage follicles mechanically or inflame them outright.

Each of these has a different tempo and a different prognosis, and two often overlap. The history and examination, sometimes with blood work, separate them.

The honest map

For pattern loss and treatable thinning, the clinic's hair loss treatment pathway starts with identifying the cause, then matches it: prescription medication where the indication supports it, scalp treatments that support the follicle, and correction of whatever the blood work finds. The earlier miniaturisation is caught, the more there is to protect.

Shedding phases mostly need reassurance, time and the trigger addressed, and being told that honestly is worth more than a package of sessions sold against a problem that was already resolving.

What we protect above all is time. Follicles that have miniaturised away do not return, so the plan is built around keeping what is active, not chasing what is gone.

When we would say no

Sudden patchy loss, scarring, redness, scale or pain is not aesthetic territory. Those patterns point to conditions that need a dermatologist, and the referral goes out before any treatment is discussed here.

We also do not sell hair treatments against a deficiency that a supplement and a corrected diet will fix, and we do not promise regrowth where follicles are gone. Where the honest ceiling is 'keep what you have', we say that sentence out loud.

Common questions

Why is my hair suddenly shedding so much?

Sudden diffuse shedding is most often telogen effluvium, a synchronised shed that follows illness, childbirth, crash dieting or severe stress by two to three months. It usually recovers once the trigger has passed. The assessment confirms the pattern and checks nothing else is hiding under it.

Is hair thinning reversible?

It depends on the cause and the stage. Deficiency-driven thinning reverses when corrected. Shedding phases recover. Pattern loss can be slowed and partly regained while follicles are still active, but follicles that have fully miniaturised do not come back, which is why early assessment matters more here than in almost any aesthetic concern.

Do I need a hair transplant?

Not as a first question. A transplant relocates hair; it does not stop the loss that created the problem, and untreated pattern loss keeps moving behind it. Stabilise first, then judge what, if anything, needs rebuilding. If surgery is genuinely the right step, we say so and refer.

Does thinning in women mean something is wrong?

Sometimes. Female pattern loss is common and gradual, but new or rapid thinning in women justifies checking iron, thyroid and hormonal status before anything is treated cosmetically. That is a blood test, not a package.

Do supplements work?

Only against a deficiency. If your iron or vitamin D is low, correcting it helps and the improvement is real. If nothing is deficient, supplements mostly produce expensive urine, and the honest money goes to treating the actual cause.

From the journal

Losing hair? The cause decides everything.

In person, with Dr Ong. History, scalp examination and blood work where needed, then a plan matched to the cause, and a straight answer about what can and cannot be regained.

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