👉 Pseudosyphilis is a sexually transmitted infection (STI) that primarily affects young people between 15 and 24 years old. It can be transmitted through sexual contact, but it's also spread by sharing contaminated needles or other body parts. The main symptoms of pseudosyphilis include painful sores on the skin, often in the genital areas, along with a fever, chills, headache, muscle pain, and fatigue. The infection is usually treated with antibiotics