Common causes of itchy bags under the eyes include insect bite dermatitis, allergic dermatitis and folliculitis.
1. Insect bite dermatitis: If the bags under the eyes are bitten by mosquitoes, the toxins injected under the skin of the bags under the eyes will cause the body to produce an immune response, like histamine and other immune factors will stimulate the bags under the eyes to itch.
2. Allergic dermatitis: when the skin under the eyes is allergic to cosmetics such as foundation, eye shadow, sunscreen and other allergies and allergic dermatitis, the local nerve stimulation, can produce itching.
3. Folliculitis: If the roots of the hair follicles at the bags under the eyes are infected by pathogenic bacteria such as Staphylococcus aureus, forming folliculitis, the infiltration of inflammatory cells can lead to local itching.
Itchy bags under the eyes, may also be a lot of other reasons, to go to the regular hospital in time to identify the cause of the disease, and under the guidance of a professional doctor to choose the appropriate method of treatment.