Two photographs of skin lesions caused by dermatitis herpetiformis. In the photograph on the left, a man’s bare forearms are held hands-up in front of his bare chest. His left forearm is marked near the elbow with 8 to 10 sores in varied degrees of inflammation. The sores and adjacent inflammation are roughly one-quarter inch diameter. There are fewer, less inflamed sores on the man’s right forearm near the elbow. In the photograph on the right, an adult’s bare knee shows scarring and five sores in varied degrees of inflammation. The sores and adjacent inflammation are roughly one-quarter inch diameter.