Why does half of my face swell up every winter?

Swelling on one side of the face during winter may result from physiological factors such as excessive water intake, or pathological causes including allergic skin diseases, periodontitis, and glomerulonephritis. It is advisable to seek medical attention promptly and receive appropriate treatment based on the underlying cause. Specific analyses are as follows:

1. Physiological Factors

Excessive water consumption before bedtime may increase the burden on the kidneys, leading to facial edema. This is a normal physiological phenomenon that typically does not require special treatment. In daily life, it's important to maintain a balanced diet and avoid drinking large amounts of water.

2. Pathological Factors

1. Allergic Skin Disease

Individuals with an allergic constitution may develop allergic skin conditions upon exposure to allergens such as pollen or dust mites, resulting in localized symptoms like redness, swelling, and itching of the skin. Under medical guidance, patients can take antihistamines such as loratadine tablets, cetirizine hydrochloride tablets, or chlorpheniramine maleate tablets for allergy relief.

2. Periodontitis

This condition may be caused by improper diet, smoking, or other factors, and can manifest as gum redness and swelling, tooth pain, and other symptoms. Inflammation affecting the gums may also lead to facial swelling. Treatment may include medications such as metronidazole tablets, amoxicillin capsules, or ibuprofen sustained-release capsules, taken as directed by a physician.

3. Glomerulonephritis

Glomerulonephritis may be associated with genetic factors or infections, leading to reduced filtration function of the glomeruli. Patients may experience facial swelling, hematuria (blood in urine), and other symptoms. Under medical supervision, medications such as furosemide tablets, losartan potassium tablets, or prednisone acetate tablets may be used to manage symptoms.

In daily life, individuals should ensure adequate rest, maintain sufficient sleep, avoid staying up late, and engage in moderate outdoor activities such as walking or calisthenics, which may aid in recovery.