Symptoms include itching, burning, and raised bumps that can worsen with scratching.

Anti-itch creams andantihistaminesmay help relieve discomfort.

pilesasmiles / Getty Images

What Are Sea Lice Bites?

Jellyfish and sea lice are found all over the world

pilesasmiles / Getty Images

After you leave the water, the larvae stay on your skin even as the water drains off.

When your bathing suit rubs against your skin, it triggers the larvae to sting, releasing toxins.

This reaction causes an itchy,red rashknown as seabathers eruption.

Sea bathers eruption or Sea Lice Bites on the skin

Reproduced with permission from © DermNetdermnetnz.org2023.

Where Are Sea Lice Found?

Sea lice are commonly found in ocean waters.

Symptoms of Sea Lice

This photo contains content that some people may find graphic or disturbing.

Reproduced with permission from DermNetdermnetnz.org2023.

Without prompt treatment, the rash may worsen over time.

On lighter skin, the rash typically appears red.

On darker skin, it may look pink, purple, or slightly lighter than the surrounding skin.

Any rash or blisters can become infected.

Treatment

Most cases of sea lice bites can be managed at home with simple self-care steps.

People who have had seabathers eruption before may also experience more intense reactions in the future.

When to See a Healthcare Provider

Sea lice rash usually improves within a couple of weeks.

The larvae inject toxins that cause an itchy, red rash that can worsen over time.

Some people, particularly children, may develop systemic symptoms like fever, nausea, or fatigue.

Treatment includes rinsing off, applying vinegar, using antihistamines, and applying hydrocortisone or calamine lotion.

Seek medical attention if symptoms worsen or signs of infection develop.

Florida Health Department.Sea lice.

MyHealth Alberta.Seabather’s eruption.

New Jersey Department of Environmental Protection.Seabather’s eruption.

Columbia University Irving Medical Center.Seabather’s eruption.

Riverchase Dermatology.How to treat sea lice rash (seabather’s eruption).

American Academy of Dermatology Association.Seborrheic dermatitis overview.

National Capital Poison Center.Seabather’s eruption symptoms and treatment.