How does male pattern hair loss start and progress?
It usually starts with recession at the temple corners and thinning at the crown. As it advances the two areas may join, and hairs become finer and shorter over time.
The speed and extent vary between people. In some men only the hairline recedes, while in others the crown thins more.
Classifications describing the regional spread are commonly used for staging; the doctor assesses this at examination.
How is it diagnosed?
Diagnosis mostly rests on history and scalp examination. Dermoscopy helps by showing differences in hair diameter.
In sudden, diffuse or patchy loss, other causes are investigated. Blood tests are requested if needed.
Conditions that can look similar, such as telogen effluvium, must be distinguished because the approach differs.
What are the medical treatment options?
Commonly used options include medicine groups applied to the scalp and taken by mouth, plus some supportive methods. The doctor decides which is suitable.
The effect of medicines is usually apparent after months and requires regular use; benefit gained is known to fade if they are stopped. Some medicines can have side effects, and dose, duration and follow-up must be managed under medical supervision; no dosing information is given on this page.
Details are covered on the medical treatment page.
What role do PRP and mesotherapy play here?
PRP and mesotherapy may be considered as additional methods to support hair quality. The level of evidence is limited and results vary from person to person.
These methods do not generally replace medical treatment. Some people have reported increased hair density, but the same result cannot be expected for everyone.
Suitability is assessed according to the state of the follicles and general health.
When does hair transplantation come into play?
Hair transplantation may be considered when loss has reached a certain level and there is enough hair in the donor area. Because loss continues, it is usually planned together with medical treatment.
Native hair outside the transplanted areas may keep falling, so a long-term plan matters. It is a surgical procedure and a separate field of expertise.
You can find more information on the page comparing transplantation and medical treatment.
Frequently asked questions
Can male pattern loss be stopped completely?
Because the process is genetic, complete reversal is not expected. Treatment mostly aims to slow progression.
At what age does it start?
It can start at any age after puberty; frequency rises with age.
Does wearing a hat cause hair loss?
Wearing a hat is not a cause of genetic hair loss. Tight hats and constant pulling can, however, cause mechanical damage.
When do the medicines start working?
Effect is usually assessed over a few months. A temporary increase in shedding may be seen early on; talk to your doctor about this.
When should I start treatment?
Early assessment gives more options. It helps to be examined when you first notice a sign.
Sources (5)
- British Association of Dermatologists: Patient Information Leaflet: Hair Loss Male Pattern (Androgenetic Alopecia) (2024)
- U.S. FDA: PROPECIA (finasteride) tablets, prescribing information (2022)
- European Dermatology Forum: S3 - European Dermatology Forum Guideline for the Treatment of Androgenetic Alopecia in Women and in Men (2018)
- International Society of Hair Restoration Surgery: Androgenetic Alopecia
- U.S. National Library of Medicine (DailyMed): Minoxidil Topical Solution for Men (drug facts label)
This content is for general information and does not replace a personal medical assessment.