Why does the skin itch?

As we all know, every spring when the weather is warm and flowers are blooming, many people will suffer from skin allergies and itching symptoms. There are many reasons for itchy skin and red bumps, and it is usually known that they are caused by eczema or allergies. Eczema can be caused by diet, environment, emotions or some diseases. So what other conditions may cause eczema that we need to pay attention to? Next, the editor will tell you.

What causes itchy red bumps on the skin?

1. Insect bite dermatitis

Related to insect bites, such as bed bugs, fleas, lice, mites, mosquitoes and other insects inject saliva after biting the skin, inducing allergic reactions. To prevent this disease, you should avoid going to grass, shade of trees or damp places with many mosquitoes, and you can burn mosquito coils indoors.

2. Urticaria

Hives can cause red bumps that appear in patches. Symptoms include sudden redness, swelling, and itching of the skin, and the appearance of rashes of various sizes and shapes, which are isolated or scattered at first, gradually expand, and merge into patches. Most of these rashes will disappear automatically within 24 hours, but new rashes will continue to appear one after another.

3. Eczema

Itchy bumps on your body may also be a sign of eczema. Eczema is caused by a variety of internal and external factors. The obvious symptoms are acute deterioration of the primary cause, with redness, swelling, erosion, and exudation. The secondary cause appears 1-2 weeks after the onset of the disease, manifested as papules, small vesicles, erosion, exudation, etc.

4. Solar dermatitis

Solar dermatitis is caused by some people's allergy to ultraviolet rays. It usually occurs 1-2 hours after sun exposure. The rash is mostly on the face, the "V"-shaped area in front of the neck, the back of the hands and upper limbs, and manifests as small papules and blisters, with subjective itching. In severe cases, the rash may also appear on non-exposed parts. It is painless, but the itching is obvious and disappears very slowly.

After reading the full text, it seems that there are many situations that can cause eczema. The reasons for each person's eczema may be different, and therefore the prevention and treatment methods are also different. In addition, although itchy skin is not a big deal, it can be very painful when it occurs. Don't scratch it with your hands in a hurry, as there are bacteria on your hands, which can easily aggravate the eczema.