What causes skin blistering itching?

Clinically common skin blisters, combined with itching skin diseases there are many kinds, such as herpes, eczema, contact dermatitis and simple pruritic rash, etc. 1, herpes is caused by herpes virus infection, clinical manifestations of flaky erythema cluster of papules, blisters, accompanied by mild itching pain, or burning sensation. 2, eczema is an allergic disease, its rash is polymorphic, there will be severe itching, there may be red, papules, mounds and blisters and secondary blisters burst after the formation of erosive exudation and scab. 3, contact dermatitis is in contact with the site of clear erythema, and erythema on the basis of papules, mounds and blisters, secondary erosion and exudation. 4. Prigo simplex is mostly considered to be related to mosquito bites and allergies. It is manifested as blisters on the basis of erythema. Blisters are mostly isolated and do not fuse with each other, accompanied by severe itching.