Several conditions can affect head circumference, including:
Microcephaly: A condition where the head circumference is significantly smaller than normal, often due to abnormal brain development. Macrocephaly: A condition where the head circumference is larger than normal, which may be due to genetic factors or conditions such as hydrocephalus. Genetic syndromes: Certain genetic disorders can affect head size and shape. Premature birth: Premature infants may have different head growth patterns compared to full-term infants.
