Androgenetic Alopecia (Male)
Androgenetic alopecia, also known as male pattern hair loss, is the most common cause of hair loss in men.
It typically presents as a receding hairline and thinning at the crown, progressing in a predictable pattern over time.
The condition is driven by genetic and hormonal factors, and can begin as early as the late teens or early twenties.
At The London Skin and Hair Clinic, Consultant Dermatologists assess male pattern hair loss to confirm the diagnosis and identify contributing factors. Patients seeking a hair loss dermatologist in London can access specialist evaluation and advice.
Androgenetic alopecia in men is known as male pattern balding
Effective treatments are available, but the key is in starting treatment early
Topical minoxidil is also available in oral form for treating male pattern balding
Platelet-rich plasma (PRP) injections can be effective as part of an overall treatment plan
What causes Male Pattern Hair Loss?
Male pattern hair loss is caused by a genetic sensitivity of hair follicles to dihydrotestosterone (DHT), a hormone derived from testosterone.
DHT affects susceptible hair follicles by:
- shortening the hair growth cycle
- causing progressive miniaturisation of the follicles
- producing thinner, shorter hairs over time
This process leads to gradual hair thinning and eventual hair loss in affected areas.
Genetic predisposition plays a significant role, and the pattern and progression can vary between individuals.
Who is at risk of Male Pattern Hair Loss?
Male pattern hair loss is very common and can affect men at different ages.
Risk factors include:
- family history of androgenetic alopecia
- increasing age
- genetic sensitivity to DHT
The condition can begin early in adulthood and progress gradually over time.
What are the symptoms of Male Pattern Hair Loss?
The hallmark symptom is progressive hair thinning in a characteristic pattern. Common signs include:
- recession at the temples (hairline moving backwards)
- thinning at the crown (vertex)
- gradual merging of thinning areas over time
Hair becomes finer and shorter as the condition progresses, eventually leading to reduced hair coverage in affected areas.
Unlike other forms of hair loss, the sides and back of the scalp are typically preserved.
Images of Androgenetic Alopecia
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How is Male Pattern Hair Loss diagnosed?
A dermatologist will diagnose androgenetic alopecia through clinical examination of the scalp.
Assessment may include:
- evaluation of the pattern of hair loss
- hair-pull test
- review of medical and family history
In some cases, further investigations such as blood tests or scalp biopsy may be recommended to exclude other causes of hair loss.
How is Male Pattern Hair Loss treated and managed?
Management aims to slow progression and support hair regrowth where possible.
Treatment approaches may include:
- topical or oral medications to support hair growth
- therapies that reduce the effect of DHT on hair follicles
- supportive treatments as part of a long-term plan
Early intervention is often beneficial in preserving existing hair.
A dermatologist will recommend the most appropriate management strategy based on the stage and progression of hair loss.