These findings are consistent with the idea that a pre-morbid deficit in the ability to resist proactive interference reflects a vulnerability factor for experiencing intrusive memories after trauma exposure.
Some of the studies that were described above did not differentiate between pure developmental dyscalculia and the co-morbidity between developmental dyscalculia and ADHD [e.g., [ 13, 28, 36, 38, 40]], thus it is not clear whether the attentional difficulties in those with developmental dyscalculia are part and parcel of their dyscalculia or of the co-morbid deficit (i.e., ADHD).
The exon 11 missense variant was present in two cases diagnosed with autism, one case diagnosed with an autism spectrum disorder (one point below one domain of the ADI-R), and one case diagnosed with PDD NOS, in addition to co-morbid attention deficit hyperactivity disorder and a tongue tic (Case 129).
Further, at an early age, children who develop psychosis have evidence of pre-morbid cognitive deficits in verbal learning, working memory, attention, processing speed and executive function, along with "soft" neurological deficits, including problems with coordination and fine motor control (Owens and Johnstone 2006; Cannon et al. 2002).
Alprazolam is also often prescribed with instances of hypersomnia and co-morbid sleep deficits.
Student athletes with pre-morbid conditions such as attention deficit hyperactivity disorder (ADHD) or prior concussion history were included in this study.
Co morbid disorders are common, particularly attentional deficit hyperactivity disorder (ADHD), and dyslexia [ 17, 19, 21].
The study applies a "cause-to-outcome" strategy to identify pre-morbid pathogenesis and underlying biological disease mechanisms of psychosis and secondarily the morbid condition of autism and attention deficit hyperactivity disorder.
These modifying factors may include medications; a history of multiple prior concussions; younger age; and co-morbid conditions such as mental illness, attention deficit hyperactivity disorder, headache disorder, and learning disabilities.
Sizoo et al. [ 3] showed higher rates of co-morbid SUD in patients suffering from Attention deficit hyperactivity disorder (ADHD) compared with those with Autism Spectrum Disorder (ASD) (58 % versus 30%%), but their study did not focus on HFA.
