Androgenetic

Androgenetic alopecia (AGA), also known as pattern hair loss or balding, is a type of hair loss that occurs due to an underlying susceptibility of hair follicles to androgenetic miniaturization. It is the most common cause of hair loss and will affect up to 70% of men and 40% of women at some point in their lifetimes. Men typically present with hairline recession at the temples and vertex balding, while women normally diffuse thinning over the top of their scalps. Both genetic and environmental factors play a role, and many causes remain unknown.

Causes

The cause of androgenetic alopecia is believed to be a combination of both genetic and environmental factors. The primary mechanism that leads to androgenetic alopecia is the miniaturization of hair follicles, which is caused by androgens. Androgens are hormones that play a role in male traits and reproductive activity. The most significant androgen in the process of hair loss is DHT.

Diagnosis

The diagnosis of androgenetic alopecia can be usually established based on clinical presentation. In some cases, a skin biopsy may be necessary to confirm the diagnosis. The Hamilton-Norwood scale is commonly used to measure the extent of hair loss in men, while the Ludwig scale is used for women.

Treatment

There are several treatments available for androgenetic alopecia. The most common treatments include medications like Minoxidil and Finasteride, hair transplant surgery, and laser therapy. However, the effectiveness of these treatments can vary from person to person.

See also

• Hair loss
• Alopecia areata
• Telogen effluvium

References

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