I am male, 48 years old, circumcized. Three weeks ago I noticed a red area, clearly defined, the size of a thumbnail, close the base of the head of my penis. The red area is smoother than the rest of the penis head. I noticed it just after sex with my wife. When I press against the red area, the skin loses its redness and looks like the skin around it. There is a (very) mild sensation of irritation.
I also have rosacia, frequent jock itch as well as athelets foot. I also have taken antibiotics for many years--small dosage, one pill a day as prescribed by my doctor, to control the rosacia. As a teen I was given tetracyclene for a long time for acne.
Is this red patch on my penis a yeast or fungal infection? Could candida be at the root of it? Recommended treatments?