Some STDs cause skin rash and dry skin symptoms around the genitals, mouth, and other parts of the body, appearing 2 - 3 weeks after the initial exposure. The most common STDs that have skin rashes as one of the symptoms are HIV, Herpes and Syphilis. Generally, along with the skin rash on the body, STDs also exhibit various other symptoms in men and women. nnSTD symptoms in women are unusual vaginal discharge, painful urination, pain during sexual intercourse, lower abdominal pain, and heavy menstrual bleeding. nnSTD symptoms in men are thick penile discharge, burning sensation while urinating, swollen testicles, anal itching, irritation inside the penis, painful bowel movements.nnCommon symptoms of STDs for both males and females are skin rash, fever, headache, weight loss, diarrhea, joint pain, jaundice, sore throat, dry cough, night sweat, and fatigue.