I have a red rash on my arms and insteps. It develops in summer and disappears when the weather is cold. What is the cause? How to treat it?

Problem analysis:

Hello, your situation is a red rash on the arms and back of the feet, which occurs when you are hot. It is considered to be eczema, prickly heat, etc., and it is itchy and red locally. Symptoms such as swelling and swelling may occur when exposed to heat or moisture.

Opinions and suggestions:

It is recommended that you drink more water, reduce the intake of spicy and other irritating foods, use Wuji ointment externally, and take Fangfeng Tongsheng Pills, Niuhuang Jiedu Pills, and Shidu It was improved with drugs such as Qingqing, griseofulvin, and loratadine.