What are the causes of skin itching?

The causes of skin itching are diverse, mainly including: 1. Dry skin: Dry climate, excessive cleansing, or the use of alkaline detergents can damage the skin barrier, leading to dryness and itching. 2. Skin diseases: Conditions such as eczema, dermatitis, urticaria, and tinea corporis can cause inflammatory reactions in the skin, resulting in itching. 3. Allergies: Contact with allergens such as food, medications, and pollen can trigger allergic reactions in the skin, causing symptoms like itching and swelling. 4. Systemic diseases: Systemic conditions such as diabetes, liver or gallbladder diseases, and thyroid disorders may indirectly cause skin itching by affecting the skin's metabolism and nutritional status. 5. Infections: Skin infections caused by microorganisms such as bacteria and fungi can also result in itching. 6. Psychological factors: Mental factors such as excessive stress or emotional fluctuations may affect nerve regulation and lead to skin itching.