A 2-year-old baby’s body itches as soon as he goes to bed may be related to hives, allergies, dry skin and other conditions. 1. Hives: Hives usually appear at night when the temperature is lower, or when the temperature is low after taking a bath. 2. Allergies: If there are allergy-inducing substances in the bed at night, it can cause allergies in the skin of a 2-year-old baby and manifest as itchy discomfort. 3. Dry skin: Because the skin itself does not have a protective layer of oil, it can lead to particularly dry skin, and after undressing and seeing the wind, it will lead to itchy skin. 2-year-old baby to sleep on the body itchy, there may be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.