Itchy eyelid margins are usually caused by the state of visual fatigue, allergen stimulation or inflammatory diseases of the eye, and different causes are treated in different ways.
1. Visual fatigue: due to the stimulation of staying up late, excessive eye use and other bad habits, triggered by the ciliary muscle spasm, resulting in dysfunction of the oil secretion of the blepharoplakine glands, so that the lubrication of the surface of the eye is reduced, resulting in dryness, itchiness and other symptoms, there will be itchy eyelid margins.
2. Allergen stimulation: contact with allergens, such as pollen, mites, etc., re-exposure to allergens that have produced antibodies in the body will combine with the corresponding antibodies adsorbed on the cell surface, so that the above cells release histamine and other substances, causing allergic reactions such as capillary dilation, increased permeability of the blood vessel wall, smooth muscle contraction and increased secretion of glands, which will lead to itchy eyelid margins.
3. Ocular inflammatory diseases: blepharitis, etc., due to the inflammatory reaction will cause local mucosal congestion and edema, triggering submucosal capillary dilatation, resulting in venous stagnation around the eyes, local inflammatory cell infiltration will stimulate the eye surface trigeminal nerve endings, reflex susceptibility to increase the formation of eyelid itchy symptoms.
Eyelid edge itch is caused by a variety of reasons, should consult a doctor in a timely manner, follow the doctor’s instructions for diagnosis and treatment.