Recurrent episodes of redness, burning pain, and warmth of the extremities following exposure to heat or exercise with symptoms predominantly involving the feet.
Comment:
Warmth, ambulation, physical exercise, sitting, leg dependence and wearing shoes or gloves can provoke and aggravate symptoms while immersion in ice/cold water, uncovering affected areas, ventilation and elevation can ameliorate these symptoms. Pain attacks usually start with an itchy-like feeling and then progress to a severe burning sensation as was reported by most patients, with the durations of which ranging from several minutes to hours and even days. Erythromelalgia can be a Mendelian trait or can be triggered by polycythemia vera, lymphoproliferative disorders, hypertension, and hyperviscosity.