FASD often does not exist by itself. Alcohol damage can cause other problems at the same time. These co-existing conditions are called “comorbid conditions” or “comorbidity."
Because the nervous system is damaged extensively in FASD, it’s not unlikely to see other neurological problems such as seizures, tics, or disorders such as ADHD. Sometimes a mental health condition may co-exist. A few examples are bipolar disorder, obsessive-compulsive disorder, and dissociative disorders.
Comorbid conditions can mask FASD symptoms or complicate the process of getting a correct diagnosis.