Physiological edema is mostly due to poor sleep at night, or the pillow is too low when sleeping, which affects facial blood return. Some women also have eyelid edema during menstruation. These are normal phenomena, so don't worry too much.

Pathological eyelid edema can be divided into inflammatory eyelid edema and non-inflammatory eyelid edema. In addition to eyelid edema, the former has local symptoms such as redness, heat and pain, which are caused by acute eyelid inflammation, eyelid trauma or periocular inflammation. Most of the latter have no symptoms such as local redness and fever. Common causes are allergic diseases or allergies to eye drops, heart disease, hypothyroidism, acute and chronic nephritis, and idiopathic neurovascular eyelid edema.

Eyelid edema is what we usually call eyelid edema, which is a relatively common phenomenon. Because the eyelid skin is the thinnest part of the whole body skin, the subcutaneous tissue is loose, which is easy to accumulate fluid and cause edema. There are many reasons for eyelid edema. According to different reasons, eyelid edema is generally divided into physiological and pathological.

1. Physiological eyelid edema: generally due to lack of sleep at night, too long sleep time, or because the pillow is too low at night, affecting facial blood return. Some women also have eyelid edema during menstruation. This kind of eyelid edema is more common in healthy people, which has no effect on the body and often fades naturally.

2. Pathological eyelid edema: It can be divided into inflammatory eyelid edema and non-inflammatory eyelid edema. Inflammatory eyelid edema besides eyelid edema, there are symptoms such as local redness, heat and pain. Common causes are: (1) acute eyelid inflammation, such as sty and erysipelas. (2) Eyelid injuries, such as chemical burns and insect bites. (3) Periocular inflammation, such as acute dacryocystitis and periostitis.

Non-inflammatory eyelid edema has no local symptoms such as redness, heat and pain. Common causes are: (1) allergic diseases or allergies to eye drops. (2) Acute and chronic nephritis. (3) Heart disease, hypothyroidism and anemia can all cause eyelid edema. (4) Idiopathic neurovascular eyelid edema.

Once eyelid edema occurs, after excluding physiological factors, we should actively find the cause and treat the primary disease. Only when the primary disease and systemic diseases improve can eyelid edema gradually subside.