There are red spots on my face that don't hurt or itch, what's going on?

There are some red spots on the face that are neither painful nor itchy. The most common reason is dermatitis. It may also be due to the living environment. For example, in areas with higher altitudes, the weather is dry, the oxygen is thin, the sun is strong, and the ultraviolet rays are severe, which may also cause this situation. Of course, for ordinary people, the most common cause is skin inflammation. Let us learn about this aspect below.

The causes of dermatitis can be divided into two main categories:

1. Primary allergic dermatitis irritation: mainly caused by strong acids, strong alkalis, lice and certain highly irritating or highly concentrated chemicals. This type has no individual selectivity and no incubation period. Anyone who comes into contact with it can immediately cause acute skin inflammation. 2. Allergic dermatitis hypersensitivity reaction (allergic reaction): This type is mainly a delayed hypersensitivity reaction (type VI hypersensitivity reaction). It is caused by contact with certain irritants (allergens) acting on the skin and mucous membranes, and only a small number of people with specific allergic constitutions develop the disease.

Allergic dermatitis does not occur immediately after the first contact, but often takes a latent period of 4-20 days (7-8 days on average) for the body to become sensitized. If the body comes into contact with the substance again, dermatitis may occur in about 12 hours (generally no more than 72 hours). This type of allergic reaction is common in contact dermatitis.

There are many types of irritants that can cause allergic dermatitis:

1. Various animal furs, some animals such as bees, jellyfish, ticks, mosquitoes, butterflies, moths, etc.; 2. Chemical substances. Most allergic dermatitis is caused by chemical irritants, such as drugs, dyes, detergents, oils, cosmetics, chemical fibers, plastic products, chemical raw materials, contraceptive devices, watch straps, nail polish, etc.; 3. Plants, mainly including mustard, croton, garlic, nettle, pyrethrum, etc. Therefore, regarding the question of whether allergic dermatitis can be cured, dermatologists point out that when you suffer from allergic dermatitis, you should go to a regular hospital in time to check for allergens, and then receive reasonable treatment to restore skin health.