The cause of cholinergic urticaria allergy is mainly related to temperature. For example, the disease can be triggered by the release of acetylcholine from peripheral nerves and cholinergic nerves after exercise, emotional stress, or a hotter diet, resulting in cholinergic urticaria. The symptoms of the disease are mainly 1-2mm red bumps on the trunk of the extremities, which can be slowly relieved by emotional excitement or a hotter diet after this factor. In addition, you can also exercise by yourself, pay attention not to eat too hot food, while maintaining a calm state of mind, avoid too much excitement. Some of the more serious patients need to be treated in hospital, but the effect is often slow, mainly for acetylcholine and antihistamines.