Sir, Have some infection in penis i.e. red spot can be seen on Glans and Corona from last 3-4 months. There is some discharge from the spots and once this red spot was all over Glans and Corona but now it is limited to small area(approx 1 cm) over Glans. Before few months back this infection also happened 2-3 times but it was automatically disappeared. But now it is permanent. Also some itching and burning feels in penis due to this.
Most likely, this is yeast infection in penis. Try to keep the area clean, dry and moisture free. Apply Clotrimazole cream on the affected area. However, you should also get yourself examined by a urologist or dermatologist as this might be related to STDs like Herpes or Syphlis.