Do Wolf Spider Bites Cause Necrosis?

A 2012 study published in the journal Wilderness and Environmental Medicine that examined a verified wolf-spider bite in a 20-year-old New York state resident, also found no evidence of skin necrosis.

Which spider bites cause necrosis?

The brown recluse spider (Loxosceles reclusa) is the most common of the Loxosceles species in the United States. Human Loxosceles bites were first described in the literature1 in 1879 and were first associated with necrosis² in 1958.

What does spider bite necrosis look like?

The redness changes over two to three days to a bluish sinking patch of dead skin—the hallmark of necrosis. The wound heals slowly over months but usually completely. Rarely, bites may cause widespread symptoms, with occasional fatalities.