I think .............You have to go to the Primary Health Center for this to see a General Practitioner ,he can refer you to the skin and venereology department .Yes as what .... mentioned above it's not possible to get a diagnosis and treatment by Google.............. NB : Never try to visit Emergency Departments for such kind of Chronic problems ,,,,, you will be triaged out from there after long waiting ............. Your health center will be mentioned on the back of your Health card..........