Increased skin temperature is commonly associated with erythermalgia. Erythromelalgia is a disorder caused by excessive vasodilation of the extremities and is characterized by paroxysmal redness, increased skin temperature and burning pain in a warm environment. Primary cases are more common. It is a rare disease. Patients are mostly children or 40 years old. In the 433 cases reported in Guangzhou, young women accounted for 92.86% of the total number of cases, with a male to female ratio of 1/13. The onset of the disease is rapid, often causing or exacerbating attacks when the limb drops, stands or moves in a warm environment. Local skin temperatures above the critical temperature often cause attacks, and attacks are often more severe at night than during the day. The attack is characterized by symmetrical, paroxysmal, severe pain in both feet, mostly burning pain, occasionally stabbing pain or swelling pain. The skin is flushed and congested, and the skin temperature is increased with sweating. The dorsalis pedis and posterior tibial artery pulsations are increased. Cold compresses, elevation of the affected limb or exposing the foot to the outside of the quilt, and local temperature below the critical temperature may relieve the attack and restore the skin color to normal. The pain is usually confined to the bunions and toes of the foot and, less commonly, to the corresponding areas of the hand. Each attack lasts for several minutes or even hours and is occasionally accompanied by local edema. In between attacks, the extremity often remains mildly numb or painful, but is not associated with neurotrophic disorders such as ulceration or gangrene. Prevention of elevated skin temperature Patients are advised to wear porous sandals, feet should not be covered during nighttime sleep, and feet should avoid exposure to warmth, especially dry heat, as much as possible. Those with heavy seizures can move to a place where the temperature does not reach below the critical temperature that causes painful attacks. However, it is not advisable to use ice or ice water to relieve the attack to avoid damaging the blood vessels and peripheral nerves of the extremities, which may cause the attack to persist or worsen. It is advisable to eat foods containing vitamin A, foods containing vitamin B, foods containing vitamin C, calcium and iron, vegetarian fruits and the like, and light and moist products. The following foods are recommended to eat in moderation: 1, carrot puree containing vitamin A, a particularly nutritious vegetable green, yellow vegetables can be chosen. 2, sesame contains vitamin B. To relieve the skin temperature rise very good effect, fresh milk, wheat germ and other foods can be chosen. 3, red dates containing vitamin A. For patients with erythema limb pain has a significant nutritional effect, it is recommended to take a few capsules daily, boiled porridge. Patients with elevated skin temperature should not eat spicy, fatty, sweet, nourishing and greasy products, and avoid eating fishy things. 1, chili pepper pungent, sweet, great heat. Make the condition worse. 2, small pepper nature is warm, can produce internal heat, is not conducive to the early recovery of the disease. 3, wine, pungent heat to help fire. Will aggravate the eye disease, causing local congestion and edema.