I am thinking Rogaine was developed for male-patterned baldness, while alopecia is somewhat different. 2LilBoys
Rogaine (minoxidil) was originally developed as an anti-ulcer then anti-hypertensive medication.
https://www.researchgate.net/publication/289021851_How_minoxidil_was_transformed_from_an_antihypertensive_to_hair-loss_drug
As I recall, the scientist doing the BP work noticed the hair on his arms was growing with exposure to the drug.
WWG1WGA
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
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LonePalm, le Républicain du verre cassé (The Broken Glass Republican)