| Erythema nodosum
Extremely tender lumps on the legs and sometimes the arms caused by inflammation of the fat beneath the skin (panniculitis). The bumps look like bruises and change color in the same way, from pink to blue to brown. They are often accompanied by fever, joint pains, and redness around the eyes. They may continue to erupt for a week or several, but they eventually resolve, normally within 1-2 months. | |