Hello and welcome to health care magic. White patches on tongue and penis head is suggestive of candida infection, which is a fungus. Simultaneous appearance of candida in these two areas usually happens if your immunity is low. And the most common cause is HIV infection. Have you taken the hiv test recently or is it 4 years back. It s not clear from your description. Anyway my advice is to visit your Physician and he will give you Clotrimazole ointment for application. But you need to investigate further into the cause of your immunosuppression. Hope this discussion will be helpful to you Thank you.