Dry and tight hands may be caused by over-cleaning, vitamin A deficiency, dryness syndrome, skin diseases and other factors. 1. Excessive cleansing: If you wash your hands frequently with alkaline soap, it may cause irritation to the skin on your hands, which may lead to dryness and tightness of the skin. 2. Lack of vitamin A: If you have the habit of picky eating or have an unreasonable diet, it may lead to a lack of vitamin A in the body, which may cause skin keratinization, resulting in dry and tight hands. 3. Dry syndrome: dry syndrome may harm the exocrine glands, resulting in dry mouth, dry eyes, dry skin, itching and other symptoms, which may also occur in the case of dry and tight hands. 4. Skin diseases: ringworm, dry eczema and other lesions may also lead to dry hands, tightness and other symptoms, if you often have dry and tight hands, you should consult a doctor in time so as not to delay the condition.