 [ Symptoms ] my son is allergy test rast score was 642 he is allergic to dogs cats and dust mites should i get rid of the dog [ Disease ] hi these do not appear like any stds hiv etc such spots can occur due to vitamin deficiency especially if you practise oral sex then chances of such spots is more take multivitamin tablets avoid spicy food and junk food lime juice two times a day will help apply local creams thanks