Two cases of secondary erythromelalgia associated with essential hypertension

Erythromelalgia is a rare clinical syndrome characterized by redness and painful episodes of the feet and hands, which is triggered by heat or exercise. A 22-year-old male soldier presented with paroxysmal redness of the both feet associated with pain and tenderness upon heat stimulation, including wearing military shoes for periods of over 30 minutes. He had been treated of essential hypertension with dichlorothiazide and had a familial medical history of essential hypertension with his mother and brother. A 21-year-old male soldier also presented with paroxysmal redness of both feet and hands associated with pain and tenderness upon heat stimulation. By searching for the underlying or combined diseases of the erythromelalgia, he was also found to have essential hypertension. Herein, we report two cases of secondary erythromelalgia associated with essential hypertension.