Is it a concern if a 3-month-old baby shakes their head from side to side while sleeping?

Generally speaking, whether it is concerning for a 3-month-old baby to shake their head during sleep depends on whether the underlying cause is physiological or pathological. The details are as follows:

1. Physiological factors

If the baby shakes their head due to discomfort caused by high room temperature, excessive sweating on the head, or skin irritation from sweat, then head shaking during sleep is usually not a serious concern. However, parents should actively eliminate these environmental factors to prevent poor sleep quality.

2. Pathological factors

If the head shaking results from medical conditions such as scalp eczema, milk crust (seborrheic dermatitis), presence of papules or oozing lesions, calcium deficiency, or otitis media with stimulation from purulent secretions, then it is generally more concerning. Active treatment is recommended to prevent worsening symptoms that could affect sleep, the baby's health, and normal growth and development.

When caring for a 3-month-old baby, parents are advised to closely observe their condition and seek timely medical attention if any signs of discomfort occur.