The common causes of itchy hair edges at the back of the neck are due to folliculitis, urticaria, and atopic dermatitis.
1. Folliculitis: Folliculitis is an inflammatory skin disease caused by the infection of hair follicles by pathogenic bacteria, mainly manifested as pimples, itching, redness, swelling, pain and other symptoms.
2. urticaria: urticaria is usually caused by allergies, such as food, drugs, etc., the back of the neck hair side of the skin will appear on the red spots, wind, accompanied by itchy symptoms, can appear in the back of the neck, but is generally not limited to a certain part.
3. Allergic dermatitis: Allergic dermatitis is also caused by allergic substances and skin allergic reactions, common allergens are drugs, food, pollen, etc.. Itchy, erythematous and even edematous skin at the back of the neck can occur.
When the patient appeared after the back of the neck hair edge itching, should promptly consult the doctor, under the diagnosis of professional doctors, standardized treatment.