5 months baby sleep head constantly swaying from side to side, may be physiological factors, rickets, eczema and other factors. 1. Physiological factors: such as high indoor temperature, the back of the head part of the sweat more, due to sweat stimulation, so that the baby is uncomfortable, the head will be swaying side to side during sleep, should be adjusted to the indoor temperature, can be improved on their own. 2. Rickets: due to vitamin D deficiency caused by calcium and phosphorus metabolism disorders in the body, it will lead to sleep head kept swaying around, accompanied by restless sleep, occipital baldness and other symptoms, you can follow the doctor’s orders to supplement vitamin D, calcium gluconate oral solution, etc., and go out more in the sun to promote calcium absorption in the body. 3. Eczema: may be related to environmental factors, because eczema will cause itching symptoms, the child will be through the frequent shaking of the head to relieve the itching, after the diagnosis, can follow the doctor’s instructions to use glycerine lotion to improve the symptoms of itching, if necessary, can be applied to the treatment of hydrocortisone cream and other drugs. Parents should not give their children medication arbitrarily, and should follow the doctor’s instructions to use medication reasonably, because improper use of medication may cause the baby to have serious adverse reactions.