What damage can syphilis cause?

Syphilis may remain quiet after an early sore or rash. Without treatment, the infection can later affect organs and tissues. Possible problems include numbness, weakness, difficulty with balance, changes in thinking, vision symptoms, hearing changes, or inflammation affecting the heart and blood vessels. These complications are not inevitable, but they require medical assessment because some effects can be lasting.

A person can have complications without a dramatic skin symptom. HIV, pregnancy, and symptoms involving the eyes, ears, or nervous system can change how urgently clinicians investigate and treat the infection.

Arrange STI screening if you may have been exposed, had a painless sore or unexplained rash, or have a partner diagnosed with syphilis. Tell the clinician about headaches, vision changes, hearing changes, numbness, weakness, or balance problems. These details may lead to specialist assessment.

If syphilis is diagnosed, take the prescribed antibiotic exactly as directed and attend follow-up. Do not assume that a disappeared sore means the infection has cleared. Avoid sexual contact until your clinician gives specific advice, and ensure recent partners are offered evaluation.

Seek urgent care for sudden or worsening vision loss, eye pain, new hearing loss, severe headache, confusion, weakness, difficulty walking, or loss of coordination. Pregnant people with possible exposure should contact a clinician promptly because untreated infection can affect the baby.

Ask whether your symptoms suggest involvement of the eyes, ears, or nervous system, which tests are needed, how treatment will be monitored, and when partners should be assessed.