1255 evidence-based guides answering what people actually search about STDs and STIs. Start with a topic hub below.
What STDs and STIs are, how they are defined, and the vocabulary clinicians use.
110 guides
Signs to watch for, when they appear, and how to tell an STI apart from something else.
142 guides
Where, when and how to test, what panels cost, and how to read your results.
131 guides
Exactly how each infection does and does not spread, with honest risk levels.
192 guides
Specific infections and conditions, including the ones that only look like STDs.
457 guides
Cures, antibiotics, timelines, home care and prevention.
223 guides
An STD is an infection passed mainly through sexual contact. Learn causes, the 30+ pathogens involved, symptom…
Health departments, sliding-scale clinics, private labs, urgent care or at-home kits — compare every place to …
STI stands for sexually transmitted infection — an infection spread mainly through vaginal, anal, or oral sex.…
Most STDs cause no early symptoms — you can't truly know without a test. How to assess yourself, when to suspe…
VD stands for venereal disease — the pre-1990s term for today's STDs/STIs like syphilis, gonorrhea and herpes.…
Crabs are pubic lice — parasites that cling to body hair and spread through close contact, including sex and b…
Eight common STDs cure completely with antibiotics — syphilis, chlamydia, gonorrhea, trich and more. Four vira…
From ancient Greece to the 1490s 'great pox' to HIV's jump from primates — trace where major STDs came from an…
STDs spread through semen, vaginal fluid, blood, rectal contact and skin-to-skin touch — not hugs, toilets or …
Gonorrhea, syphilis, herpes and HPV all pass through oral sex — HPV-linked throat cancer is rising in men. Per…
BV isn't technically an STD — you can have it with zero sexual history — but sex raises recurrence risk. What …
No STI transmission from toilet seats has ever been documented — STD germs die in seconds off-body. What actua…