What is Acalvaria?
Acalvaria is an extremely rare congenital birth defect that is noted by the absence of the flat skull bones of the brain. The size of the malformation is variable. In extremely rare instances, it may involve the entire skull. Dura mater, and other muscles of the scalp are also not found in the affected area. The skull base and facial features are fully formed and usually appear normal. The central nervous system is rarely affected. The prevalence is less than 1 per 100,000 births.
What are the symptoms of Acalvaria?Common symptoms of Acalvaria include the following:
- Absence of flat bones of cranial vault
- Extra little finger
- Duramater missing as well as associated muscles
- Absence of skull cap
- Failure to produce adequate levels of cortisol