Suddenly a lot of small red dots on the face may be due to contact dermatitis, insect bite dermatitis, chicken pox and other factors.
1. Contact dermatitis: when the facial skin comes into contact with cosmetics, pollen, ultraviolet rays, certain drugs and other exogenous substances, it may lead to allergies, manifested as edema, pinpoint-sized dense pimples, erythema, itching, swelling and pain and other symptoms.
2. Insect bite dermatitis: after the facial skin is bitten by mosquitoes, mites and other insects, it will lead to localized skin allergic and inflammatory reaction, which can be manifested as petechiae, acne, papules, blisters and other symptoms, often accompanied by intense itching.
3. Chickenpox: It is caused by varicella zoster virus infection, which is highly contagious and has a rapid onset, and fever and malaise may occur before the rash appears. The rash is first seen on the trunk, and then spreads to the face and limbs. The rash starts as a red blotchy rash, and then turns into papules and herpes, often accompanied by mild itching.
Suddenly a lot of small red dots on the face may also be due to other factors, it is recommended that patients seek medical attention in a timely manner, and actively cooperate with the relevant examination, in order to clarify the cause of the disease, targeted treatment.