Why am I suddenly itchy in many areas of my body?

Sudden itching in many areas of the body may be caused by dry skin, allergic dermatitis, urticaria, chronic nephritis, diabetes, or other conditions.

1. Dry Skin

Excessive bathing or using water that is too hot may remove natural oils and sebum from the skin, leading to dryness. This is especially common during autumn and winter, and can result in widespread itching. Using moisturizing lotions or creams can help maintain skin hydration, gradually relieving symptoms.

2. Allergic Dermatitis

Allergic dermatitis is usually triggered by an overreaction of the immune system to allergens such as food, medications, or pollen. When the immune system reacts excessively to these substances, it may release histamine and other inflammatory mediators, causing skin itching. It is recommended to consult a doctor and use anti-inflammatory medications such as mometasone furoate cream, indomethacin cream, or hydrocortisone butyrate cream to help alleviate symptoms.

3. Urticaria (Hives)

Inflammation caused by urticaria may stimulate surrounding nerve endings, resulting in intense itching. Other symptoms may include red rashes and blisters. Patients are advised to consult a physician and consider treatment with medications such as cetirizine hydrochloride tablets, compound Bai Zhi tincture, or urticaria pills, which can help eliminate dampness and relieve itching.

4. Chronic Nephritis

Chronic nephritis leads to gradual deterioration of kidney function, impairing the body's ability to effectively eliminate metabolic waste and toxins. These substances accumulate in the blood, potentially causing generalized itching—especially on the skin surface—and may be accompanied by abdominal pain and bad breath. Follow medical advice to take medications such as amoxicillin-clavulanate potassium tablets, prednisolone acetate tablets, or furosemide tablets to suppress inflammation and relieve symptoms.

5. Diabetes

If blood glucose levels are not properly controlled in diabetic patients, persistent hyperglycemia may cause glucose in the blood to irritate the skin, leading to itching. Consult a doctor about taking medications such as repaglinide tablets, gliclazide modified-release tablets, or saxagliptin tablets to control blood sugar and relieve discomfort.

After symptoms appear, seek medical attention at a hospital for appropriate examinations. Follow the doctor’s instructions for treatment based on test results. Maintain a regular diet and avoid raw, cold, spicy, or irritating foods.