Sores on the genital, rectal area, buttocks, and thighs: outbreaks.

• A. Syphilis
• B. Genital herpes
• C. Chlamydia
• D. HPV

Answer: (B)

Outbreaks of sores in the genital, rectal area, buttocks, and thighs point to a recurrent viral infection that hides in nerve cells and reactivates. Genital herpes, caused by herpes simplex virus, produces painful blisters or ulcers in those regions and tends to recur in the same general areas. After the initial infection, the virus stays dormant and can flare up periodically, often triggered by stress, illness, or a weakened immune system. Lesions usually begin as small blisters that break open to form ulcers, then crust and heal, sometimes with itching or burning.

Other infections don’t fit this pattern as well. Chlamydia typically causes discharge and burning with urination rather than recurrent painful ulcers. HPV leads to genital warts rather than painful sores. Syphilis starts with a single painless sore and follows a different progression, not the pattern of repeated outbreaks in multiple nearby areas.