Active clinical trials for "Attention Deficit Disorder with Hyperactivity"

The aim of this observational cross-sectional study is to evaluate the streptococcal infection (clinical history, ASLO title and anti-DNAse title B) and autoimmunity (ABGA antibodies) in a sample of 100 adult patients diagnosed with ADHD (ie in patients in whom the disorder is permanent). Another objective will be to evaluate the frequency and types of genetic alterations of innate immunity (TLR polymorphisms, MyD88, IRAK-4) that can determine an infantile susceptibility to gram positive infections (ie S. pyogenes, S. pneumoniae, S. aureus) and the possible relationship between these elements, also in relation to comorbidity with other ABGA-related pathologies, to identify a possible pathogenetic immune mechanism of ADHD. Prevalence data will be obtained on an outpatient ADHD population for previous (history) and recent streptococcal infection (ASLO and Anti-DNAsiB), for the detection of ABGA and for the co-presence of other ABGA-related pathologies. By comparing the subgroups obtained by dividing the results on the basis of the positive infectious history, anti-streptococcus, autoantibody and comorbidity titers, it will be possible to assess whether the elevation of the ABGA titer is only linked to the previous/current infection ("infectious" group) or if there is a subpopulation of ADHD patients presenting pathological elevation of ABGA titers in the absence of infectious pictures ("immune" group). Furthermore, it is expected that the comparison of the descriptive polymorphisms TLR, MyD88 and IRAK-4 between the "infectious" and "immune" group may show a predisposition in subjects of the "immune" group.

The purpose of this research is to learn more about how children with mental health problems, including bipolar disorder (BD), attention deficit hyperactivity disorder (ADHD), and generalized anxiety disorder (GAD), differ from children without these problems. The investigators want to understand how these 4 groups of children differ in brain activity, function, and structure.

The present project is to identify the relationship between ADHD and the metabolites of tryptophan.

This study is to examine the gut problems in children with attention deficit hyperactivity disorders (ADHD) and is conducted by the Department of Psychiatry of Alice Ho Miu Ling Nethersole Hospital. Children with ADHD who attend our department will be recruited with their parents/guardians' consent. Only the primary caregiver will be invited for an interview to assess the recruited children's gut problems, autistic features, emotional problems, diet pattern and medical history. The data will be compared with normal children who are recruited as control in local primary schools. The aim of this study is to know whether children with ADHD have higher chance of gut problems, and to assess other factors associated with the linkage.

The investigators anticipate to identify specific polyunsaturated fatty acids that show significant differences between ADHD and control groups. In addition, these findings may offer more biological understanding in explaining the relationship between polyunsaturated fatty acids and visual memory among children with ADHD. The results will significantly contribute to the knowledge of the pathophysiological mechanisms of ADHD, especially the polyunsaturated fatty acids related to the behavioral/visual memory deficits of ADHD.

The aim of this study is to carry out a psychological evaluation for the parents of children diagnosed with attention deficit hyperactivity disorder (ADHD) and parents of children without ADHD as control to detect any psychological problems in those of children with ADHD . These problems may be a precipitating factor to cause ADHD in their child or have a genetic predisposition to be passed to their children. On the other hand these psychological problems may be caused by the difficulties they encounter in raising their ADHD child. The exact relation needs more researches and to be more investigated.

The purpose of this study is to detect specific vocal acoustic patterns in the voice of attention deficit hyperactivity disorder (ADHD) patients.

Identification of prevalence and Risk factors for disruptive behavior in children with Attention Deficit Hyperactivity Disorder and Early recognition of disruptive behavior in children with ADHD

Adolescents suffering of ADHD may have impaired driving performance. The investigators would like to check the differences in driving performance in young adults(aged: 15-18 years) with ADHD by driving simulator and seat pressure mapping with and without methylphenidate medication.

The aim of the our study is to investigate whether there is an increased incidence of ADHD ( based on self reports and questionnaires) among children with short stature due to constitutional growth delay (CGD) in comparison with children with Familial short stature.