Common STD Symptoms in Men: 1  No symptoms. 2  Blisters on or around penis. 3  Spots, bumps or lesions on the penis.  Discharge (clear, white, or 1  yellow) Oozing from the tip of the penis (thick or thin)  Painful 1  urination. Painful ejaculation.  Itching on the tip of the 1  penis. Rash on the penis, testicles, or  groin.