Porencephaly is not contagious. It is a rare neurological disorder that occurs due to brain damage before or after birth, resulting in fluid-filled cavities in the brain. Porencephaly is not caused by infectious agents or transmitted from person to person. It is typically a congenital condition or can be acquired due to brain injury. If you suspect someone has porencephaly, it is important to consult with a medical professional for proper diagnosis and treatment.