Itchy eyebrows are mostly likely to be limited dermatitis formed by allergic factors, but there is also a greater possibility that it is eczema or seborrheic dermatitis. The causes are not only allergic factors, but also factors of your own skin metabolism. Allergic factors are mostly due to diet or breathing allergic particles, as well as local allergic reactions formed by contact with allergens. After the appearance of local allergic reactions, the main manifestation is itching, while some may be accompanied by varying degrees of scaling, or papules, papules, and some may appear erythematous reactions. Therefore, itchy eyebrows need to be treated differently.