I used Rogaine for about 6 weeks. I was using the men's 5% foam once a day. My shed went from about 200 a day into the 500-700 range and my Derm told me to stop using it. I also had other symptoms. -- My hair got extremely dry during my time on Rogaine, and it hasn't recovered yet. I was also using Nioxin and Nizoral shampoos, which may have contributed to the dryness. -- I got acne. Big cysts on my forehead and temples close to where I applied Rogaine. I still have some of the red spots. -- scalp pain. It felt like someone was pulling my hair all the time. -- Itching - moderate itching enough to make me scratch too much. -- My face looked puffy. Several people told me this. Could I have been allergic to it? Has anyone had a reaction this severe and been able to continue?