What causes urticaria? Is it related to this?

Urticaria is a skin disease that causes hives to appear regardless of time or place. The symptoms of urticaria are itching, which becomes more severe the more you scratch it. The main causes of urticaria include mental factors, physical factors, viral infections, etc.

Psychological factors

Because people's mental stress may cause the release of a substance called acetylcholine in the body, this substance will cause blood vessels to dilate, increase the permeability of the vessel walls, and serum infiltration, thus forming the disease. This is also one of the common causes of urticaria.

This type of urticaria is called cholestatic urticaria.

Physical factors

Urticaria may be caused by factors such as excessive cold or heat, strong sunlight, friction and vibration. For example, cold urticaria, solar urticaria, etc.

Viral infection

Urticaria may be caused by factors such as excessive cold or heat, strong sunlight, friction and vibration.

Various infections such as bacteria, fungi, and pathogens are also common causes of urticaria. For example, common pathogens of upper respiratory tract infections often change the body's responsiveness, thereby causing such diseases. The most common is papular urticaria.

Plant and animal factors

In recent years, the incidence of such diseases caused by the environment, animals or plants has been on the rise. At the same time, plants such as "stinging nettle" are also a major cause of contact urticaria. For example, plant pollens often cause allergic urticaria.

Other reasons

The cause of the disease may also be genetic factors, climatic factors, living environment, chemical fiber clothing, or clothing treated with disinfectants, which may also cause urticaria. Most of these patients have allergic constitution.