How much should I worry about alopecia?

Depends... ...On what is causing it. Most kinds of alopecia (hair loss) are cosmetic issues only. It can, however, be caused by internal problems or medications. If you suspect that your alopecia is in that category, you should see your doctor.
Varies. Genetic alopecia is cosmetic only but can be disturbing for women or. Men t a young age. Alopecoa areata is treatable. If the hair loss is disturbing see a dermatologist for evaluation and treatment.