Symptom Checker — Understand Your Sexual Health Symptoms What Common Symptoms Suggest — and What Symptoms Cannot Tell You

Symptoms as a Guide — Not a Diagnosis

Symptoms are a guide to what might be wrong — they suggest possibilities — but they cannot diagnose: same symptom (discharge, burning, a lesion, itching) is produced by multiple conditions, and majority of infections that matter most (~70% of chlamydia, ~85–90% of extragenital gonorrhea, most early syphilis) produce no symptoms at all.

The honest framing: a symptom is a reason to test, not a diagnosis; an absence of symptoms is not a clean bill — asymptomatic infections are commonest and most important to catch.

This page guides on what common symptoms suggest, what they cannot rule out, and when to test rather than guess — information that turns a symptom into right next step.

Discharge, Burning, Itching

The urethral/vaginal symptoms — discharge, burning on urination, itching — suggest urethritis or vaginitis: causes include chlamydia, gonorrhea, trichomoniasis, mycoplasma, candida, and BV — a symptom that suggests infection but cannot distinguish which one.

The pattern: same symptom is produced by multiple organisms — testing distinguishes them — and discharge with a recent exposure is testing indication, not self-diagnosis.

Lesions, Ulcers, Sores

A genital lesion — a blister, ulcer, or sore — suggests ulcer differential: herpes (usually multiple painful vesicles that ulcerate), syphilis (a single painless chancre), chancroid (painful ragged-edged ulcers), LGV (a different pattern), and non-infective causes.

The distinguishing is clinical plus testing — a painful vesicular lesion suggests herpes ( lesion PCR confirms); a painless ulcer suggests syphilis ( serology confirms) — appearance guides, test confirms.

No Symptoms — the Commonest Presentation

The majority of infections that matter most produce no symptoms: ~70% of chlamydia, most extragenital gonorrhea (~85–90% is silent at throat/rectum), most early syphilis, most HIV early on, and most HPV — asymptomatic infections that produce complications while producing no warning.

The honest implication: no symptoms is not a clean bill — it is commonest presentation of infections screening exists to catch — asymptomatic screen is detection symptoms cannot provide.

When to Test Rather Than Guess

Test when: a symptom is present ( discharge, lesion, pain — indication), a recent exposure happened ( window applies — ~1–2wk CT/GC, ~2–4wk HIV, ~3–12wk syphilis), a partner is diagnosed ( exposed partner tested), or routine screen is due ( periodic check regardless of symptoms).

The honest framing: symptom is reason to test, not test substitute — testing is answer; symptom is question.

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