The red spots on the neck may be mosquito bites, known as insect bite reaction, or they may be caused by friction irritation or diseases such as eczema and contact dermatitis.
1. Insect bite reaction: insect bite reaction is an allergic reaction to insect bites, which is characterized by redness, swelling, erythema and blisters on the skin at the place of the bite. Often occur in the exposed parts, so the red spots on the neck may be mosquito bites.
2. Friction stimulation: In addition to mosquito bites, erythema on the neck may also be caused by local skin friction stimulation, which is normal.
3. Eczema: Eczema is a chronic inflammatory itchy skin disease, the cause of which is related to genetics, immune abnormalities, hormonal changes. It is characterized by erythema, edema, papules, etc., and can appear in the neck and other places.
4. Contact dermatitis: contact dermatitis is caused by skin contact with external substances, localized erythema, swelling, pimples and other symptoms, contact dermatitis occurring in the neck, common sensitizers for necklaces, collars or scarves.
If erythema appears on the neck, it is recommended to go to the regular hospital in time to find out the cause and follow the doctor’s instructions to standardize the treatment.