Hi, I went to the derm the other day, because I found 3 small bald spots on the top left side of my scalp. The spots were very red and inflamed. The derm gave me some foam and said to use it for a month, if there is not new hair in a month, he wanted to do a scalp biopsy. My question is what things is he looking for? What types of conditions could it be? I tryed to ask the derm, but he really did not give me an answer, he said the spot did not look like normal mpb. However I am thinning all over. I also would like to know where to get the cheepest proscar, money is very tight, thanks