"It's like having your skin burned off of you," Henry told The Boston Globe. "Imagine your worst sunburn times 1,000. It's an absolutely devastating condition." TEN is a more severe form of Stevens-Johnson syndrome (SJS), according to the National Institutes of Health. Medications including nonsteroidal anti-inflammatory drugs (like ibuprofen), anti-gout drugs, penicillins and anticonvulsants most commonly cause the condition according to the Mayo Clinic.