What are the manifestations and symptoms of calcium deficiency in infants?

Generally, manifestations and symptoms of calcium deficiency in infants include sleep disturbances and night terrors, irritability and crying, abnormal bone development, delayed teething, and excessive sweating. A detailed analysis is as follows:

1. Sleep disturbances and night terrors

Calcium has a stabilizing effect on the nervous system. A deficiency can increase neural excitability, causing unstable sleep in infants, which may manifest as difficulty falling asleep, frequent awakenings during sleep, or nighttime crying.

2. Irritability and crying

Calcium-deficient infants tend to be more irritable and often cry without apparent cause, and are difficult to soothe. This irritability and crying may affect the infant's daily life and the parents' sleep quality.

3. Abnormal bone development

Calcium deficiency in infants can also lead to abnormal bone development, such as cranial softening, square skull, and delayed closure of the fontanelle. Additionally, bone deformities such as pigeon chest, funnel chest, bowlegs, or knock-knees may occur. These abnormalities can impact the infant's normal growth and physical appearance.

4. Delayed teething

Healthy infants usually begin teething around six months of age, but calcium deficiency may delay the onset of teething. Calcium-deficient infants might not have teeth erupt until eight months or even later, or may experience reversed tooth eruption sequences and uneven tooth alignment.

5. Excessive sweating

Calcium deficiency may increase sympathetic nerve excitability, leading to increased sweat gland secretion. Infants with calcium deficiency may sweat heavily even at rest, particularly noticeable on the head. Infants may sweat profusely even when the room temperature is not high.

Parents should closely monitor their infant's physical condition and seek medical examination and appropriate treatment promptly if abnormalities are noticed. Additionally, introducing complementary foods appropriately and ensuring adequate exposure to sunlight can also help prevent calcium deficiency in infants.