Contact dermatitis from sponges

Venomous sponges can be found in all Australian coastal waters and can cause sponge-associated contact dermatitis.

Contact with venomous sponges initially causes mild localised itchiness and stinging. In some cases, this sensation increases and can cause intense symptoms for days. The most common clinical sign is erythema, but occasionally vesicles, local swelling and joint stiffness occur. Fire sponges can cause delayed reactions with desquamation after 2 to 3 weeks.

The mainstays of treatment are analgesia and antihistamines for symptomatic relief.