Venereology is the medical science that works with all sexually transmittable diseases.
This branch of medicine is far less discussed openly as it is often very unpleasant and embarrassing to be confronted with. That does not, however, make it less important, because untreated venereological diseases could lead to painful and chronical side effects, reduced functioning of the genitalia, infertility, and even infections in the central-nervous system, cardiovascular system, the liver, eyes and brain. It is vital to ask for professional advice from a real doctor and not to try home remedies that could often worsen the situation.
As the venerologist is also a dermatologist on the same time, one can always say that he visited the dermatologist and not going into any details.