Hair Loss: When Should You Worry?
Losing hair is normal; losing too much is not.
Dr. Sophie Renard
Dermatologist
6 min read

Losing 50 to 100 hairs per day is physiological. Beyond that, or when density visibly decreases, it's time to consult.
Main Causes
- Androgenetic alopecia: the most common, hereditary, affects men and women. Progressive miniaturization of follicles under the influence of androgens.
- Telogen effluvium: diffuse and sudden hair loss 2-3 months after stress, illness, childbirth, or a strict diet.
- Nutritional deficiencies: iron, zinc, vitamin D, biotin. A blood test can identify them.
- Thyroid dysfunction: both hypothyroidism and hyperthyroidism can cause hair loss.
- Alopecia areata: an autoimmune disease causing localized bald patches.
Treatments According to Cause
- Topical Minoxidil: stimulates regrowth in androgenetic alopecia
- Finasteride: blocks testosterone conversion in men
- Supplementation: correction of deficiencies identified by biological assessment
- PRP (platelet-rich plasma): emerging technique with encouraging results
"Miracle" food supplements generally lack solid evidence. Starting with an accurate diagnosis with a dermatologist is essential.
#Hair#Alopecia#Treatment
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