I haver posted previously about my problems, but doing some research I have a new question in hopes of gathering your opinions. In august I went top the dermatologist top have two sebaceous cysts removed from my eyebrow. The dermatologist prescribed me a four month supply of doxycycline, I took it for two months. After I had taken the medication for about a month is when I started to notice a red spot on my penis that would get dry and peel and then do it all over again. Now the head of my penis is really red and the spot on my penile shaft is still there and I am starting to get a scaly surface on my penis. Btw I am married and haven't cheated, just wondering if you guys think the doxycycline could have triggered a yeast infection? And if so what are my treatment options?