Male Pattern Baldness: Causes, Stages and Treatment

Male pattern baldness often starts quietly: the corners of the hairline move back, the crown becomes more visible, or the hair on top no longer feels as thick. Also called androgenetic alopecia, it is the most common form of hair loss in men.

There is no single timetable and no treatment that works for everyone. Understanding the cause and likely pattern helps you decide whether to monitor it, try medical treatment or discuss surgery. Choosing not to have treatment is also a reasonable option.

What causes male pattern baldness?

Genes and hormones both play a part. In susceptible follicles, dihydrotestosterone (DHT) contributes to a process called miniaturisation: the hairs become finer and shorter over successive growth cycles. Coverage gradually decreases, most often around the front and top of the scalp.

The tendency can come from either side of the family. It is not simply inherited from your mother's father, and relatives may develop different patterns at different ages. Having male pattern hair loss does not, by itself, show that your testosterone level is unusually high.

How is it diagnosed?

A clinician looks at the distribution of thinning, the hair and scalp, and the history of change. They may use magnification to compare hair thickness. Typical pattern hair loss usually develops gradually, but other conditions can occur alongside it.

Sudden heavy shedding, distinct bald patches, scalp pain, inflammation or scaling deserve assessment rather than an assumption that it is all genetic. Mention illnesses, dietary changes, medicines and any family history. Tests are considered when the history or examination suggests another cause.

The Norwood stages

The Hamilton–Norwood scale describes common patterns of male hair loss. It helps clinicians record the extent of thinning; it does not predict exactly how quickly one person's hair will change or provide a graft number by itself.

Stages 1 and 2 describe little recession or a modest retreat at the temples. Stage 3 shows more established recession; the ‘vertex’ variation includes crown thinning. In stages 4 and 5, frontal and crown loss become more extensive, with a diminishing bridge of hair between them. At stage 6 the areas merge, and stage 7 leaves a narrower band around the sides and back.

There are variations, including diffuse thinning and patterns with more frontal recession. A photograph that looks like one stage is not a substitute for examining the donor area and the rest of the scalp.

Can it be stopped or reversed?

There is no cure that removes the underlying tendency. Treatment may slow further loss and, for some people, improve growth from miniaturised follicles. The response varies, and longstanding bald areas are less likely to regain useful coverage with medicine alone.

Discuss what success would mean for you. Maintaining the hair you have can be a worthwhile outcome, even without a dramatic before-and-after change. Agree when progress will be reviewed and use comparable photographs rather than judging the result from daily mirror checks.

Minoxidil

Topical minoxidil is applied to the scalp and may help some men retain or improve hair growth. It needs regular use, and assessing benefit takes months. Any benefit generally depends on continuing treatment.

Scalp irritation and an initial increase in shedding can occur. Check the product instructions and speak with a pharmacist or clinician about suitability. Oral minoxidil is a different, prescription treatment used off-label for hair loss; it needs a separate discussion of risks and monitoring.

Finasteride and other prescription options

Finasteride reduces the conversion of testosterone to DHT. It is available on a private prescription for male pattern hair loss in the UK. Like minoxidil, it needs continued use to maintain its effect and does not help everyone.

Discuss possible sexual and psychiatric side effects before starting. Sexual problems have sometimes persisted after treatment was stopped. Tell the prescriber about a history of depression or suicidal thoughts. MHRA advice is to stop finasteride 1 mg used for hair loss and contact a doctor as soon as possible if depression or suicidal thoughts develop.

Dutasteride is sometimes considered by specialists, but its use for hair loss is off-label in the UK. Do not assume a stronger effect on DHT makes it the right choice for you. Ask why it is being suggested, what the alternatives are and how adverse effects will be reviewed.

When might a hair transplant help?

A hair transplant moves follicles from a suitable donor area into selected areas of loss. FUE removes follicular units individually; FUT uses a strip of scalp from which the grafts are prepared. Both involve surgery, recovery and a risk of scarring or other complications.

Suitability depends on the diagnosis, donor supply, extent of loss and likely future thinning. Surgery does not stop untreated native hair from continuing to thin. A plan should therefore consider how the result may look in years to come, rather than focusing only on a low hairline or a high graft count.

Our hair transplant cost page explains the fixed prices of £3,499 for 2,500 grafts and £3,999 for 3,000 grafts. Both include a complimentary PRP treatment and 18 months' free aftercare. Clinical suitability and the appropriate graft number must be assessed before booking.

Other ways to manage hair loss

Hair fibres, a different cut, a hair system or a shaved style can help with appearance without surgery. Protect exposed scalp from the sun. A balanced diet supports general health, but supplements do not reliably reverse inherited thinning unless there is a relevant deficiency to address.

PRP, laser devices and other procedures are also advertised for hair loss. Evidence, protocols and results vary. Ask what is known about the particular treatment, the full course and cost, and how its benefit will be measured.

Preparing for a consultation

Take a few dated photographs and a list of medicines or products you use. Ask about the diagnosis, realistic outcomes, adverse effects, ongoing costs and what happens if treatment does not help. If you are considering surgery, meet the surgeon and discuss the donor area, future loss and aftercare.

You can request a consultation in Glasgow at Glasgow Hair Transplant Clinics to discuss your options. If the hair loss is sudden, patchy or accompanied by scalp symptoms, see your GP first so a different cause is not overlooked.

Questions and answers

Does wearing a hat cause male pattern baldness?

Ordinary hat wearing does not explain inherited pattern hair loss. Anything that repeatedly pulls tightly on the roots can cause a separate problem, so avoid painful tension.

Will I reach Norwood stage 7?

Not necessarily. The scale describes appearance, not an inevitable sequence or a personal forecast. The pattern and speed of change vary.

Is treatment available on the NHS?

A GP can assess hair loss and investigate medical causes when appropriate. Finasteride for male pattern hair loss and cosmetic hair transplantation are not provided on the NHS.

Can I have surgery without taking medicine?

Some people do, but the decision needs a discussion about continuing loss of native hair and the long-term plan. Medicine has risks and is not suitable for everyone; surgery also has limits.

Does a transplant create new follicles?

No. It redistributes existing follicles. That is why the available donor hair and realistic coverage matter when planning treatment.