What is the reason for itchy red bumps all over the body

There are many reasons for itching and the appearance of small red bumps on the body. The most common reason is skin diseases, such as skin allergies or eczema, which often cause such phenomena. This is closely related to some bad habits in our daily life. For example, eating some irritating foods and being in a bad mood often lead to such phenomena, especially in spring when the weather is relatively dry and the skin is also relatively dry. At this time, if some allergic reactions occur, such symptoms will also appear. In addition, mosquito bites and urticaria can easily cause such symptoms.

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. It is best not to apply safflower oil or floral water, as this can cause skin allergies and aggravate the condition.

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. It can be divided into acute urticaria, chronic urticaria, angioedema and papular urticaria.

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 the appearance of redness, swelling, erosion, and exudation; secondary causes appear 1-2 weeks after the onset, manifested as papules, small blisters, erosion, exudation, etc.; eczema lesions are often distributed on the limbs, especially the upper limbs, but can also occur on the trunk, face and neck.

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.

5. Other skin allergic diseases

(1) As we age, the skin's secretory function deteriorates, becomes thinner, and the protective layer function weakens.

(2) Long-term exposure to air pollution, smoke, dust, etc. can damage the skin.

(3) Improper use of cosmetics can also cause small red bumps on the body.

(4) Some people do not clean the air conditioner before turning it on. Dust and mites may accumulate on the air conditioner filter, causing skin allergies and symptoms such as bumps and itching all over the body.