What causes a 3- to 4-year-old child to frequently cry, throw tantrums, and have an irritable temper?

Temper tantrums and irritability in 3- to 4-year-old children may stem from physiological factors or pathological conditions, such as calcium deficiency or respiratory tract infections. Appropriate management should be selected based on the underlying cause. Specific analyses are as follows:

1. Physiological Factors

If the behavior results from insufficient parental companionship leading to a lack of security in the child, it is recommended to spend more time with the child to strengthen their sense of safety.

2. Pathological Factors

1) Calcium Deficiency
If heightened sympathetic nervous system excitability due to calcium deficiency is the cause, calcium supplements such as calcium lactate granules or calcium carbonate granules may be taken as directed by a physician. The child should also consume more calcium-rich foods like sesame paste and bone soup, and get increased sun exposure to promote calcium absorption.

2) Respiratory Tract Infection
If nasal congestion, runny nose, cough, and other symptoms caused by respiratory infection lead to airway obstruction, resulting in inadequate ventilation and body hypoxia, treatment depends on the type of infection. For bacterial infections, antibiotics such as levofloxacin capsules, amoxicillin capsules, or azithromycin tablets may be prescribed. For viral infections, medications such as acyclovir capsules, ganciclovir capsules, or oseltamivir phosphate granules can be used as directed.

In addition, conditions such as viral encephalitis, Tourette syndrome, or attention deficit hyperactivity disorder (ADHD) could also be responsible. It is advisable to seek timely medical evaluation for accurate diagnosis.