Foetal Alcohol Spectrum Disorder is a term describing the results of a parent drinking alcohol during pregnancy. This can result in marked physical characteristics, intellectual disability, challenging behaviour, communication difficulties, developmental disabilities, social skill deficits and poor attention span.

Behaviours associated with FAS are aggressive behaviour, antisocial behaviour, hyperactivity, law breaking behaviour.

Characteristics can also include being easily led, inability to take responsibility, lack of understanding of cause and effect, hypersensitivity, difficulty with abstract concepts, difficulty with change, presence of hypervigilance.

Diagnosis if this is extremely difficult. It relies on the parent explaining that alcohol was consumed during pregnancy.