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) is the most severe type of the disorder. FAS and other spectrum disorders affect children differently. Symptoms can range from mild to severe. They can include: 1  Problems with the heart, kidney, and/or bones. 2  Learning disabilities and low IQ.