Arteriovenous malformation. Arteriovenous malformation (AVM) is an abnormal connection between arteries and veins, bypassing the capillary system. This vascular anomaly is widely known because of its occurrence in the central nervous system (usually cerebral AVM), but can appear in any location.
Since fetal alcohol syndrome covers a wide range of problems, there are many possible symptoms. The severity of these symptoms ranges from mild to severe, and can include: 1  a small head.  a smooth ridge between the upper lip and nose, small and wide-set eyes, a very thin upper lip, or other abnormal facial features.
Fetal alcohol syndrome (FAS). These are the most severe effects that can occur when a woman drinks during pregnancy, and include fetal death. Infants born with FAS have abnormal facial features and growth and central nervous system (CNS) problems, including intellectual disability.