Early signs of thinning hair

Most people notice early hair loss as a change from what is normal for them: a little more scalp at the crown, a hairline that has moved back, or a parting that seems wider in photographs. A handful of hairs in the shower on one particular day says much less.

Pattern and pace matter. Gradual recession is assessed differently from a smooth new bald patch, heavy shedding after illness or a sore, scaly scalp. Appearance alone cannot always establish the cause, which is why the NHS recommends seeing a GP if you are worried about hair loss before approaching a commercial clinic.

What tends to change first?

The hairline and temples

Male pattern hair loss commonly begins with gradual recession at the frontal hairline and temples. The two sides are not always identical, and a mature adult hairline is not automatically evidence of active loss. Photographs taken several months apart are more useful than judging a single image.

The crown or central parting

More scalp may become visible around the crown, particularly under strong overhead light. Female pattern hair loss more often reduces density over the top of the scalp and widens the parting while leaving the frontal hairline relatively intact. Hair styling, product, lighting and wet hair can all exaggerate the appearance, so consistency matters when comparing photographs.

Hair calibre

In pattern hair loss, susceptible follicles may produce progressively finer, shorter hairs. A mixture of thick and very fine hairs in an affected area can be a useful clinical clue. It is not the same as brittle hair snapping after heat, chemical processing or repeated mechanical damage.

Shedding across the scalp

Diffuse shedding can follow illness, major stress, pregnancy, marked weight loss, iron deficiency, thyroid disease or a change in medication. It may not become obvious until weeks or months after the trigger. This is different from the slowly enlarging frontal or crown pattern typical of androgenetic alopecia.

Hair loss where styles pull

Braids, extensions, tight ponytails and other styles that repeatedly pull on the same follicles can cause traction alopecia. Reducing tension early gives the best chance of preventing permanent damage.

Shedding is not a fixed daily test

The NHS says that losing about 50 to 100 hairs a day can be normal. The number you see also depends on hair length, how often you wash or brush it and where each follicle is in its growth cycle. Counting every strand often creates more anxiety without showing whether density has actually changed.

A home hair-pull test is not a reliable diagnosis. Clinicians sometimes use a pull test alongside the history and scalp examination, but washing, technique and the phase of the hair cycle affect the result.

A better record is a set of monthly photographs taken with dry hair, the same parting, the same camera distance and similar lighting. Include the front, both temples, the top and the crown. Avoid taking photographs every day; normal variation can make them misleading.

When a GP should assess the change

Make an appointment if the change is sudden or rapidly increasing, or if you notice one or more smooth round patches, loss of eyebrow or body hair, marked itching, pain, burning, redness, scaling, crusting or pustules. A shiny area with fewer visible follicle openings also needs assessment.

None of these signs confirms a serious disorder, but they warrant assessment because alopecia areata, scalp infection and scarring alopecia are managed differently from ordinary pattern loss. The Primary Care Dermatology Society's alopecia overview stresses the importance of distinguishing scarring from non-scarring hair loss because damaged follicles may not regrow.

Tell the GP if shedding followed a new medicine, illness or marked weight change, or if there are other health symptoms. The clinic's types of alopecia guide explains the broad differences between pattern loss, autoimmune loss, temporary shedding and scarring conditions.

What an assessment involves

A GP or dermatologist will usually ask where the change began, how quickly it progressed and whether the scalp has symptoms. Recent illness, pregnancy, weight change, diet, medication, hair-care practices and family history may all be relevant.

The clinician then examines the pattern and the scalp. Blood tests are not necessary for everyone, but selected tests may be appropriate if the history suggests iron deficiency, thyroid disease or another medical cause. Magnified examination, fungal testing or a small scalp biopsy is sometimes required when the diagnosis is uncertain.

Bring a list of medicines and supplements, a short timeline and any photographs taken under consistent conditions. The clinic's consultation preparation guide gives a practical checklist.

Treatment depends on the diagnosis

There is no single treatment for every form of hair loss. Telogen effluvium often improves once the trigger has settled, although persistent shedding needs review. Alopecia areata and scarring alopecia may require dermatology treatment. Removing repeated tension is central to early traction alopecia.

For confirmed pattern hair loss, a clinician may discuss topical minoxidil for men or women, depending on the licensed product and individual suitability. Finasteride 1 mg is a prescription treatment licensed for male pattern hair loss; it is not licensed for female pattern hair loss in the UK, and the NHS advises women not to use it. Neither medicine works for everyone, and benefit generally depends on continued use.

The MHRA's updated finasteride warning covers depression, suicidal thoughts and sexual dysfunction; sexual dysfunction has sometimes persisted after treatment stopped. A prescriber should ask about any history of depression or suicidal thoughts. Anyone taking finasteride 1 mg who develops depression or suicidal thoughts should stop it and contact a healthcare professional as soon as possible. Call 999 if there is an immediate risk of serious harm, and contact the prescriber about sexual dysfunction.

PRP is offered privately, but the British Association of Dermatologists describes the evidence as limited and the response as unpredictable. It should not be presented as a diagnosis or guaranteed treatment. The clinic's hair-loss treatment page sets out medical, non-surgical and surgical options.

Where a transplant fits

A transplant is not the first response to unexplained shedding or an active scalp disorder. It may be considered for suitable, stable and permanent loss only after the cause, donor area and likely future pattern have been assessed.

FUE and FUT describe the main ways donor follicles are obtained. DHI generally describes placement of prepared grafts with an implanter device, commonly after individual follicular-unit extraction. It is not a separate cure for early hair loss and does not remove the need for diagnosis or careful donor planning.

If the only evidence is a photograph taken under unfamiliar lighting, the most sensible step may simply be to create a consistent record and review it later. If symptoms, patches or rapid change are present, seek a medical assessment rather than waiting for a cosmetic consultation.