Identifying Functional Central Nervous System Deficits
Deficits must be evident in three domains to confirm CNS abnormality for FAS diagnosis.
Functional Domain
Cognitive or developmental deficits or discrepancies
Executive functioning deficits
Motor functioning delays
Attention deficit or hyperactivity
Poor social skills
Other
Examples*
Specific learning disabilities (especially math and/or visual-spatial deficits); uneven profile of cognitive skills; poor academic achievement; discrepancy between verbal and nonverbal skills; and slowed movements or reaction to people and stimuli (e.g., poor information processing)
Poor organisation, planning, or strategy use; concrete thinking; lack of inhibition; difficulty grasping cause and effect; inability to delay gratification; difficulty following multi-step directions; difficulty changing strategies or thinking of things in different ways; poor judgment; and inaby to apply knowledge to new situations.
Delayed motor milestones; difficulty with writing or drawing; clumsiness; balance problems; tremors; and poor dexterity. For infants, a poor suck is often observed.
Described as "busy", inattentive; easily distracted; difficulty calming down; overly active; difficulty completing tasks; and/or trouble with transitions. Parents might report inconsistency in attention from day to day (e.g., "on" days and "off" days).
Lack of stranger fear; often the scapegoat; naivete and gullibility; easily taken advantage of; inappropriate choice of friends; preference for younger friends; immaturity; superficial interactions; adaptive skills signifiantly below cognitive potential; inappropriate sexual behaviours; difficulty understanding the perspective of others; poor social cognition; and clinically significant inappropriate initiations or interactions.
Sensory problems (e.g., tactile defensiveness and oral sensitivity); pragmatic language problems (e.g., difficulty reading facial expressions; poor ability to understand the perspectives of others); memory deficits (e.g., frgetting well learned material, needing many trials to remember); and difficulty responding appropriately to common parenting practices (e.g., not understanding cause-and-effect discipline).
*These examples are not exhaustive nor mutually exclusive. All domains should be assessed using norm-referenced standardised measures and by appropriate professionals using reliable and validated instruments.
Source: Adapted from Bertrand,J., Floyd, R. L., Weber, M. K., O'Connor, M., Riley, E. P.,Johnson, K. A., Cohen, D. E., & National Task Force on FAS/FAE. Fetal alcohol syndrome: Guideiines for referral and diagnosis. Atlanta, GA: Centers for Disease Control and Prevention;2004.