The latest trend in treating hair loss may sound familiar — essentially, it's a repurposed drug first popularized in the 1990s. Back then, TV viewers were inundated with ads for Rogaine, a sticky topical solution that could help treat thinning hair when applied to the scalp.

Thinning hair or baldness is not the end of the road for your hairline – especially if you act quickly and seek professional help from the start.

Alopecia is the general medical term for hair loss, which can come in different forms and severities. Hair loss is a common concern for men, and the most prevalent form is male pattern baldness, or androgenetic alopecia,