How do I know if a cut needs stitches?

Concerns & risks

You were trying to cook dinner when the knife slipped, and now there's a cut that won't stop bleeding.

Waiting too long can make stitches harder.

Causes & evidence

Deep, gaping or long cuts often need care. If symptoms are severe, sudden or getting worse, contact a doctor or emergency services.

What to do

1. Apply firm pressure for 10 minutes.
2. Clean with water.
3. Seek care if edges gape, bleeding won't stop or it's deep.
4. Check tetanus vaccine status.

Common mistakes: Common mistakes: not applying steady pressure long enough. Press firmly with a clean cloth. Wounds that are deep, gaping, on the face or joints, or won't stop bleeding need care. Ask about tetanus if your shot isn't up to date. Rinse the cut with clean water once bleeding slows, apply a thin layer of antibiotic ointment if you like, and cover it with a clean bandage. Change the bandage daily and watch for redness, warmth, pus or fever, which may mean infection.

Speed Man tip: Wounds needing stitches are best treated within hours.

Wrap-up: Pressure first. Gaping or deep cuts need care. Check tetanus.