What causes itchy skin in summer?

Jun 19, 2024 Source: Cainiu Health
Disease description:

Why does skin become itchy in summer, and why does scratching make the itching worse? What causes severe skin itching during summer?

Doctor's answer (1)
Dr. Wang Xiaoyan
Skin itching during summer is associated with various factors including high temperature, humidity, sunlight exposure, insect bites, skin infections, and dryness. 1. High temperature and humidity: The hot and humid environment in summer increases sweating, and the sweat can irritate the skin, leading to itching. 2. Sunlight exposure: Prolonged exposure to sunlight may result in ultraviolet (UV) radiation damaging the skin, causing redness, itching, and even sunburn or solar dermatitis. 3. Insect bites: The number of insects increases in summer. After being bitten, the skin may develop allergic reactions such as redness, swelling, and itching. 4. Skin infections: Warm and moist conditions promote the growth of microorganisms such as bacteria and fungi, potentially leading to skin infections like pityriasis versicolor or prickly heat, which can cause itching. 5. Dry skin: Although sweating is common in summer, prolonged exposure to air-conditioned environments or frequent use of bathing products may strip the skin of its natural moisture, resulting in dryness and subsequent itching.