A sexually transmitted viral infection caused by herpes simplex virus type 2 (HSV-2) and type 1 (HSV-1). This viral infection is spread from direct contact with active lesions (most common) or asymptomatic shedding (less common) of infected individuals. The initial eruption usually develops within 5-7 days of inoculation and consists of grouped painful vesicles, pustules, and/or erosions on an erythematous base. A prodrome of fever, malaise, and lymphadenopathy may precede the primary mucocutaneous eruption. In some individuals, primary infection can be severe and include symptoms of aseptic meningitis such as fever, headache, stiff neck, and photophobia.