What causes itchy skin in autumn and winter?

Autumn and winter weather is mainly due to dry weather, resulting in dry and dehydrated skin. Dry skin is a common cause of itchy skin, so most people experience itchy skin in the autumn and winter months. Also, as autumn and winter start to get colder, most people choose to wear close-fitting clothing such as woolen fabrics to keep warm, which often rubs against the skin and can cause itchy skin to some extent.