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STDs That Cause Anal Symptoms: Pain, Itch & Discharge
Several sexually transmitted infections can cause anal or rectal symptoms - most commonly gonorrhea, chlamydia, genital herpes, and syphilis.
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STD Symptoms
Which STDs cause which symptoms, the questions people actually search.
STI symptoms are easy to misread: the same discharge, bump, or burning can point to several infections, or to something that isn't an STI at all. These guides break down what each symptom can mean, how to tell the look-alikes apart, and when a symptom is a reason to test or to be seen the same day. Remember that symptoms are only ever a clue, because many STIs cause none at all, so testing is what actually confirms.
STD Symptoms articles
Vaginal Symptoms: Which STD Could It Be?
Vaginal or vulvar symptoms - discharge, itching, odor, burning, or pain - most often trace back to one of a handful of causes: the STIs chlamydia, gonorrhea, and trichomoniasis, and the non-STI condit.
STD Symptoms vs UTI: How to Tell the Difference
Burning when you pee, urgency, and that nagging pressure can come from a urinary tract infection - but the same feelings are classic early signs of chlamydia, gonorrhea, and trichomoniasis.
STDs That Cause Rectal Bleeding
Rectal bleeding can come from several sexually transmitted infections - most often gonorrhea, chlamydia, herpes, and syphilis when they infect the anus or rectum and cause proctitis (inflammation of the rectal lining).
Herpes vs Ingrown Hair: Bump Comparison
Genital herpes usually shows up as a tight cluster of small blisters that burn or sting, break open into raw sores, then crust over and heal in a week or more - and tend to come back in the same spot.
Painful vs Painless Genital Ulcer: How to Tell
A painful genital ulcer usually points to genital herpes or chancroid, while a painless one is the classic sign of primary syphilis.
STDs That Cause Vaginal Odor: Causes & Testing
A fishy vaginal odor - especially one that gets stronger after sex - most often points to bacterial vaginosis (BV) or the STI trichomoniasis. BV isn't sexually transmitted, but trich is.
Genital Bumps & Sores: STI or Something Else?
From herpes and syphilis to a harmless ingrown hair, genital bumps and sores have many look-alikes. Learn the tells that separate an STI from a benign spot - and when to get seen.
STDs That Cause Itching Without Discharge
Genital itching without discharge most often points to genital herpes, pubic lice (crabs), or scabies - the STIs that irritate skin rather than the urethra or vagina.
Folliculitis vs Herpes vs Genital Warts
Folliculitis, herpes, and genital warts can all show up as bumps below the belt, but they're caused by completely different things: folliculitis is an inflamed or infected hair follicle, genital herpe.
STDs That Cause Genital Itching (and What Doesn't)
Several STIs can make you itch down there - genital herpes, trichomoniasis, pubic lice (crabs), and scabies are the usual culprits.
STDs That Cause Blisters on the Genitals
The main STI that causes true fluid-filled blisters on the genitals is genital herpes (HSV-1 or HSV-2), which appears as clusters of small blisters that break open into painful sores.
STDs That Cause a Rash on Hands and Feet
A rash on the palms and soles is one of the most distinctive clues in medicine, and in sexual health it points hard to one cause: secondary syphilis.
Yeast Infection vs UTI: Symptom Comparison
A vaginal yeast infection and a urinary tract infection feel different at their core: yeast brings external itching, soreness, and a thick white discharge, while a UTI brings internal burning with urg.
Hepatitis B Symptoms: Early Signs to Watch For
Hepatitis B often causes no symptoms at all.
STDs That Cause Pain During Sex (Dyspareunia)
Pain during sex (dyspareunia) can be caused by several STIs - most commonly pelvic inflammatory disease (PID), genital herpes, and trichomoniasis.
Syphilis vs Herpes vs HPV Sores Compared
Syphilis, herpes, and HPV can all show up as something on your skin down there, but they're caused by different organisms and behave very differently. A syphilis chancre is usually a single painless f
Contact Dermatitis vs Herpes vs STD Rash
A new genital rash usually isn't herpes or any STD - contact dermatitis from latex condoms, soap, lube, or laundry detergent is a far more common cause.
STDs That Cause Swollen Lymph Nodes (Groin)
Swollen lymph nodes in the groin can be caused by several STIs - most commonly genital herpes and syphilis, plus the now-rare chancroid and early HIV.
Herpes vs Pimple: How to Tell Them Apart
If you're staring at a new bump trying to decide herpes vs pimple, here's the quick read: a pimple is usually a single, pop-able whitehead that clears in a few days, while genital herpes tends to show
Symptom guides
Which STDs cause your symptom?
Worried about a specific symptom? Start with the sign you're noticing: each guide covers the STIs behind it, how to test, and what to do next.
- Abnormal discharge
- Bumps & sores
- Painful urination
- Genital itching
- Genital blisters
- Skin rash
- Mouth sores
- Sore throat
- Flu-like symptoms
- Swollen lymph nodes
- Bleeding after sex
- Genital swelling
- Frequent urination
- Pain during sex
- Abdominal pain
- Painless sores
- Testicular pain
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