Itchy, itchy bumps on the body that get worse the more you scratch and worsen at night usually belong to the manifestation of hives. Patients may be prone to these manifestations when they are exposed to hot or cold stimuli, scratching the skin, often aggravated at night. There are very many types of urticaria, and if it is aggravated at night, it is common in the following two cases: 1. Contact urticaria: For example, hot and cold stimuli lead to contact urticaria, which usually has an acute onset, and patients often suddenly feel itchy skin, and after scratching there will be wind clusters of varying sizes, round, oval, etc. You can use vitamin C and calcium for treatment, which can reduce vascular permeability, and antihistamines, such as cetirizine, loratadine, etc.; 2, artificial urticaria: that is, skin scratching, can be scratched by hand after the skin appears localized elevation, edema erythema, the more scratching the more itchy, can be relieved within 1-3 days, can be treated with ranitidine, cetirizine and even glucocorticoids. Patients should usually dress loosely and lightly, avoid scratching, scratching or using irritating soap, avoid contact with triggering factors, and provide proper sun protection when going out. If itching symptoms worsen, patients should go to the hospital for relevant examination and treatment.