Alopecia Areata is probably the most unpredictable type of hair loss, which is both good and bad, because it means that your hair can grow back at any point in your life. It's when your immune system attacks your hair follicles, so there are ways to treat it, though it's unsure whether these treatments are effective in all sufferers. The main ones that I know of are:
- Steroid injections or steroid creams applied to the scalp
- Minoxidil: this will cause your hair to shed before it begins to grow, because it causes hair to quickly finish the telogen (resting) phase so that it can go back to the anagen (growing) phase.
These treatments usually work best for traction and androgenetic alopecia, but it's worth a try. Also, try to reduce emotional stress and consider a hair transplant or extensions if it's worrying you.
Another option is to learn how to style your hair around the areas of baldness, in order to hide it. Give me more details on how it looks or PM me if you'd like some advice on styling your hair.
To answer your main question, I don't think that men will turn you down for a medical condition that you obviously can't control much. Just try to manage the way you style your hair as much as possible.