Hairs do not usually grow back after stopping a medication (Rogaine) that was intended to grow hair. Anything is possible. Internet may be a good resource for general information but it may also be a source of confusion and misinformation.
Be sure to speak to your dermatologist. Without seeing your scalp and knowing everything about your history, I can't determine all the possible reasons.However, it's important to be aware that shedding in the first 8-10 weeks is very common with minoxidil (Rogaine). If you are worried, see...
Rogaine does not cause accelerated aging but it is discussed on the Internet.Rogaine does cause skin irritation for some people.Bags under the eyes can be due to dehydration and lack of sleep.