This is a disorder of the vascular in the body. It is classified as neoplastic or hamartomatous. The blood vessels are highly dilated and gross. They measure around a few millimetres and sometimes even centimetres. They have only a single layer of endothelium. In the lesions, there is no neuronal tissue. Due to the thinness of the vessel walls, there is accumulation of sinusoidal cavities which are filled with blood. In most cases cerebral cavernous malfunction (CCM) occur in the brain but there are other cases in which they occur in any other organ in the body.
If by any chance there is a leakage on the lesions, there will be a lot of blood loss.
Experiencing repeated hemorrhages that are small can lead to a Cerebral Cavernous Malformation. If the CCM is on the surface of the cerebral cortex of the brain, there might be frequent seizures.
CCM mostly shows its symptoms between the ages of 20 to 30 in about 0.5 % of the population. Its appearance varies either sporadically or autosomal dominance inheritance.