What are the key points in diagnosing papular urticaria

Papular urticaria is also a common type of urticaria, also known as infantile lichen. It is a common skin disease in infants and young children. Patients often develop red papules, which can cause itching and pain on the skin and often lead to repeated attacks. When such symptoms occur, it is important to understand the key points of diagnosis so that the condition can be diagnosed in time and good treatment and prevention can be carried out in time.

(1) Common in infants and young children

This disease is common in infants and young children, and is more common in summer and autumn. Sometimes several children in a family become ill at the same time.

(2) Typical skin lesions

Typical skin lesions are mung bean-sized or slightly larger light red papules, which are hard in nature and often have blisters on the top. They form scabs after scratching and are surrounded by spindle-shaped red halos. Wheals appear after scratching, and return to their original shape after the wheals subside.

(3) It often occurs on the trunk and proximal limbs.

The number of lesions is variable and they may appear in batches, scattered or in small clusters, often accompanied by gastrointestinal disorders. A small number of patients may also have blisters.

(4) The duration of the disease varies

Generally, it will disappear on its own in about a week, leaving temporary pigmentation, but new rashes may appear one after another, so new and old skin lesions can be seen at the same time. It will gradually heal when the weather turns cooler, but it often occurs again the following year.

(5) Conscious severe itching

It is particularly severe at night, often affecting sleep and making children mentally uneasy. Scratching can cause the epidermis to peel off, which can easily lead to secondary infection.