Erythromelalgia, a rare condition, is enlarged blood vessels in the feet; it also can occur in the hands, but not as commonly. Symptoms include redness, intense warmth, burning sensation, and pain. The onset of erythromelalgia can be acute or gradual, and the condition can occur on its own or in relation to another disease. In some cases, erythromelalgia results from a genetic mutation.

For relief, affected areas can be cooled and elevated. Ice and water soaks are not recommended due to potential damage to the skin. Certain prescription medications can help alleviate erythromelalgia; it is important to see a doctor for proper diagnosis and treatment (no medication should be taken without the advice of a doctor).