Written & medically reviewed by Dr. Sanjay Anbu, MBBS· Last reviewed
Sexually transmitted infections are common and treatable, but many cause no symptoms at all — so testing matters even when you feel fine. Knowing the signs helps you get treated and avoid passing them on.
Sores, ulcers, blisters or warts around the genitals
Testicular pain or swelling
Many STIs (including HIV and chlamydia) often have NO symptoms
When to see a doctor urgently
Get tested after unprotected sex or a new partner, even without symptoms
A painless genital ulcer can be syphilis — get it checked
Inform and encourage partners to get tested and treated
Use condoms to reduce risk; consider HIV testing
No symptoms does not mean no infection. Because many STIs are silent, regular testing after new or unprotected sex is important. Most are curable or treatable, and early treatment protects you and your partners. MedDroid gives general information, not a diagnosis.
Frequently asked questions
What are the signs of an STI in men?
Penile discharge, burning on urination, genital sores or warts, and testicular pain — but many STIs, like chlamydia and HIV, often cause no symptoms.
Should I get tested if I have no symptoms?
Yes — after unprotected sex or with a new partner, because many STIs are silent yet still treatable and transmissible.
Are STIs curable?
Many bacterial STIs (like chlamydia, gonorrhoea, syphilis) are curable with antibiotics; viral ones (like HIV, herpes) are treatable and manageable. Early care is best.
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.