Swelling under the eyes may be caused by physiological factors, kidney disease, inflammation and other factors, it is recommended to consult a doctor in time.
1. Physiological factors: such as mosquito bites, drinking too much water before going to bed, staying up late for a long time, sleeping too long, poor sleep quality, etc., may induce transient swelling under the eyes, which can be relieved by itself.
2. Kidney diseases: such as pyelonephritis, secondary nephropathy, glomerulonephritis, nephrotic syndrome, etc., due to the decline of renal function, resulting in water and sodium retention, which induces edema under the eyes, and may be accompanied by edema in other parts of the body, as well as proteinuria, hematuria, urinary frequency, urinary urgency and other uncomfortable symptoms.
3. Inflammation: mainly seen in the periocular inflammation, such as blepharitis, conjunctivitis, dacryocystitis, etc., usually accompanied by redness, swelling, itching, pain, as well as tears, photophobia, blurred vision and other uncomfortable symptoms.
There are many other causes of swelling under the eyes, such as heart disease. If symptoms of swelling under the eyes persist, you should seek medical attention to identify the cause of the problem and treat it accordingly under the guidance of your doctor.