Hair loss in men: causes, treatments and realistic expectations
Guide to male alopecia, assessment, minoxidil, finasteride and signs that require review.
The essentials in less than a minute
- Androgenetic alopecia usually progresses gradually in the receding hairline and crown, but not all hair loss follows this pattern.
- A sudden fall, in patches, with inflammation or general symptoms requires a different assessment.
- Minoxidil and finasteride can be part of the treatment, but their indication, risks and expectations must be reviewed individually.
- Treatment requires consistency and months of follow-up; Comparable photographs are more useful than looking at hair every day.
First: identify the pattern
Loss of density in the hairline, frontal hairline or crown is compatible with androgenetic alopecia, a process influenced by genetics and the sensitivity of the follicle to androgens. It does not mean that all men evolve equally nor that all hair loss is hereditary.
Physiological stress, a recent illness, intense weight changes, nutritional deficiencies, thyroid disorders, scalp inflammation and some medications can cause other patterns. The diagnosis determines the treatment.
What is assessed before treating
The doctor reviews when it started, family history, rate of change, diet, illnesses, medications, scalp symptoms, and previous treatments. In some cases, dermatology assessment or blood tests may be recommended.
| Option | What is good to know |
|---|---|
| Topical minoxidil | It is used for androgenetic alopecia; It requires constant application and can cause irritation or temporary initial shedding. |
| Oral finasteride | It may be indicated in certain men; requires review of sexual effects and mood swing warnings. |
| Topical finasteride | The exposure and profile are not identical to the oral route; Prescribed product information must be followed. |
| Dermatological referral | Important if the pattern is unclear, there is inflammation, scarring or insufficient response. |
Finasteride Safety
In 2025, the EMA strengthened measures to minimize the risk of suicidal ideation with Oral finasteride. The frequency cannot be estimated from the available data, but the warning is especially important in the 1 mg formulation used for androgenetic alopecia.
Mood and sexual function
If depression, depressed mood or suicidal thoughts appear, you should seek medical help; European information indicates that those taking finasteride 1 mg should discontinue it and consult. Sexual problems should also be communicated.
This does not mean that all people will have adverse effects, but rather that the decision must be informed and the follow-up must be real.
How to measure if it is working
Hair grows slowly. It is more useful to compare photographs taken with the same light, angle, distance and hairstyle every few months than to inspect yourself daily. Tolerance and ease of maintaining the regimen also matter.
If there is no response, the next step is not to double doses on your own. It may be necessary to review the diagnosis, adherence, time of use, or an associated cause.
Medically reviewed by Dr Paola Blanco
Medical reviewer for Costa Medical Services. Clinical coherence, safety and source quality reviewed.
✓ Spanish medical registration 292891820 · Review August 30, 2026
Official and clinical sources
- EMA: safety measures for finasteride and dutasteride
- AEMPS: National Formulary, minoxidil for androgenetic alopecia
Regulatory information may change. Before publishing in WordPress, you should double-check the current version of the SmPC and leaflet.
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