Syphilis is a sexually transmitted infection caused by the spirochete Treponema pallidum.
Symptoms can include:
- small, painless ulcers that typically appear on the penis, vagina, or around the anus, but can occur in other places such as the mouth
- an erythematous rash that often affects the palms of the hands or soles of the feet
- small growths (similar to genital warts) that may develop on the vulva in women or around the anus in both men and women
- white patches in the mouth
- tiredness, headaches, joint pains, a high temperature (fever) and swollen glands in your neck, groin or armpits