Craniotabes

A condition affecting the skull bones in infants

Craniotabes

File:Cranial bones en.svg

Diagram of cranial bones

Craniotabes is a condition characterized by the softening of the skull bones in infants. It is most commonly observed in newborns and is often considered a normal finding in the first few weeks of life. However, persistent craniotabes may indicate underlying metabolic bone diseases or nutritional deficiencies.

Pathophysiology

Craniotabes occurs due to the incomplete ossification of the cranial bones. The cranial bones are normally firm and protect the brain, but in craniotabes, they become soft and pliable. This condition is often detected by gently pressing on the skull, particularly in the occipital and parietal regions, where the bones may feel like a "ping-pong ball."

Causes

Craniotabes can be caused by several factors, including:

• Rickets: A condition caused by vitamin D deficiency, leading to softening of the bones.
• Osteogenesis imperfecta: A genetic disorder characterized by fragile bones.
• Congenital syphilis: An infection passed from mother to child during pregnancy.
• Hypervitaminosis A: Excessive intake of vitamin A, which can affect bone metabolism.

Diagnosis

The diagnosis of craniotabes is primarily clinical, based on the physical examination of the infant's skull. In some cases, additional tests such as X-rays or blood tests may be conducted to identify underlying conditions like rickets or osteogenesis imperfecta.

Management

Management of craniotabes depends on the underlying cause. If it is due to a nutritional deficiency, supplementation with vitamin D or calcium may be recommended. In cases of congenital syphilis, appropriate antibiotic treatment is necessary. For genetic conditions like osteogenesis imperfecta, management may involve a multidisciplinary approach including orthopedic care and physical therapy.

Prognosis

The prognosis for craniotabes varies depending on the underlying cause. In many cases, especially when due to benign causes, the condition resolves as the infant grows and the bones ossify. However, if associated with a more serious underlying condition, the prognosis will depend on the management of that condition.

Related pages

• Rickets
• Osteogenesis imperfecta
• Congenital syphilis
• Vitamin D