Symptom guide

Swollen Lymph Nodes

Swollen lymph nodes may be caused by infection or other conditions.

Overview

Swollen lymph nodes in the groin or elsewhere can be caused by local infection, systemic illness or other conditions. Persistent or painful nodes deserve evaluation.

Possible causes

Local infection
STI
Mononucleosis
Other conditions

What to note before assessment

Note location and duration
Check for tenderness
Seek care if nodes persist

Key points

May be local or generalized
Infection is common cause
STI may cause groin nodes
Persistent nodes need review

When to seek care

Groin nodes with genital symptoms
Nodes with fever
Nodes that persist or grow

Clear answers

Frequently asked questions

Can swollen lymph nodes be caused by an STI?

It can be associated with STIs, but many non-STI causes also exist. Symptoms alone cannot diagnose an infection.

Should I test immediately?

Testing timing depends on the concern and possible exposure. A clinician can advise whether testing now, later or after symptoms change is most appropriate.

Can symptoms have more than one cause?

Yes. Inflammation, skin conditions, urinary problems and infections can overlap. A careful history and examination help narrow the possibilities.

Keep learning

Related guides

Penile Discharge

Penile discharge can be caused by urethritis, infection or other conditions.

Vaginal Discharge

Vaginal discharge can be normal or a sign of infection or imbalance.

Urethral Discharge

Urethral discharge may indicate urethritis and should be assessed.

Genital Itching

Genital itching may be caused by infection, skin conditions or irritation.

Privacy and dignity

A respectful space for sensitive concerns

Sexual health questions can feel personal. The goal of every consultation is to provide clear medical information, explain options and support next steps without judgment, pressure or unnecessary disclosure.

Ask questions at your own pace.
Share only the information needed for safe care.
Request discreet communication where appropriate.
Bring a trusted support person if that helps.