Tension or heat all over the body prickling like pins and needles, may be pruritus, can also be considered related to cholinergic urticaria. 1. Pruritus: The occurrence of pruritus is considered to be related to the low secretion of autologous oil, which cannot moisturize the skin, and the sensitivity of nerve endings. In addition, excessive scrubbing of the skin or frequent sweating, resulting in excessive loss of skin moisture, can also lead to dry itchy skin. Especially when heat or nervousness, the skin may produce obvious itching sensation. 2. Cholinergic urticaria: cholinergic urticaria is also a kind of urticaria, by the mental or external stimulation, the skin releases histamine leading to itchy skin, and sometimes there are some red bumps. It is recommended to pay attention to emotional regulation, do not often in a hot environment, if necessary, under the guidance of the doctor to give the appropriate drugs for treatment, can help relieve the condition.