The lesion did not exhibit bulla formation ... venom is responsible for the patho-physiological features of the bite (necrotic ulcer). When the spider bites, it injects cytotoxic venom, which ...

A 17-year-old white male with a 9-year history of ileocolonic Crohn's disease developed a skin rash while receiving infliximab, a chimeric IgG1κ monoclonal antibody against tumor necrosis factor ...