Redness, swelling and itching of the large eyelid area are usually due to allergic blepharitis, eczema of the eyelid skin and other causes.
Allergic blepharitis: It is caused by an allergic reaction of the skin of the eye area when it comes into contact with allergens such as cosmetics, skin care products, shampoos, hair dyes, etc. The patient may also have localized redness, flakiness, and other changes. Patients may also experience localized redness, swelling, and flaking of the skin.
Eyelid eczema: It is caused by prolonged exposure of the local skin to undesirable stimuli, such as scratching the local skin or prolonged tearing, etc., and may be accompanied by localized scaly skin changes.
It is difficult for patients to determine which condition is caused by symptoms on their own, they should go to the ophthalmology department of the hospital in time for examination to confirm the diagnosis and treatment under the guidance of the doctor.