What causes head shaking and bobbing in an 11-month-old infant?

Head shaking in an 11-month-old infant may be due to normal physiological reasons, or it could result from pathological factors such as eczema, vitamin D deficiency, or epilepsy. Medical attention should be sought promptly, and improvements can be made under medical guidance through general treatments, medications, etc. Specific analyses are as follows:

I. Physiological Causes

Since the infant's nervous system is still immature, head shaking may occur in noisy environments. This is considered a normal physiological phenomenon and does not require special treatment.

II. Pathological Factors

1. Eczema: Eczema may be caused by poor hygiene, bacterial infection, or other reasons, leading to symptoms such as redness, blisters, itching, and flaking. Due to severe itching, infants may shake their heads. Parents can administer medications such as calamine lotion, mometasone furoate cream, or loratadine tablets for children under a doctor’s guidance.

2. Vitamin D Deficiency: Insufficient intake of vitamin D may lead to vitamin D deficiency, causing irritability and head shaking. Parents can follow medical advice to use vitamin D drops, calcium gluconate oral solution, or vitamin D2 injections to improve the condition.

3. Epilepsy: Epilepsy may be related to brain injury, genetic factors, etc., and infants may experience symptoms such as limb convulsions and foaming at the mouth, along with head shaking. Under medical supervision, parents may administer antiepileptic drugs such as carbamazepine tablets, sodium valproate tablets, or levetiracetam tablets.

In daily life, parents should ensure that the child gets adequate rest and sufficient sleep, avoid staying up late, and engage in moderate outdoor activities such as walking or jogging, which may help with recovery.