When the weather is hot, you will get a rash on your neck.

Considering the skin allergic reaction, it is caused by poor contact with sweat and other stimuli.

Oral cetirizine can be used for antiallergic treatment and topical hydrocortisone butyrate ointment. Pay attention to physical exercise, enhance physical fitness, increase immunity, pay attention to diet, light diet, drink plenty of water, eat more fruits and vegetables, avoid spicy food, fish, seafood, ginger, garlic and other foods, and quit smoking and drinking.