Rickets does not cause dry skin or an absence of sweat. Rickets is a disorder of calcium and phosphorus metabolism caused by a deficiency in vitamin D, and it may also be associated with bone deformities. In infants, it often presents with neurological symptoms such as being easily startled during sleep, increased night sweats, and a variety of symptoms including bald patches on the back of the head. However, an absence of sweating is often a symptom of sweat gland disorders and is not necessarily related to rickets. In some cases, babies sweat less because their sweat glands are underdeveloped, so if a child with rickets has symptoms of dry skin, they are not particularly prominent. If rickets is confirmed, it is crucial to actively supplement vitamin D, spend more time in the sun, and engage in outdoor exercise to facilitate the body's natural synthesis of vitamin D. Severe cases require oral or injected high doses of vitamin D to prevent the condition from worsening and causing bone deformities.