Active clinical trials for "Attention Deficit Disorder with Hyperactivity"

HHT or Rendu-Osler-Weber disease is a genetic disease with an autosomal dominant inheritance pattern, characterized by widespread telangiectases that can involve several organs including the intestinal tract and the liver. Liver involvement by HHT is characterized by widespread diffuse liver vascular malformations that give origin to arteriovenous, arterioportal and portovenous shunts. The prevalence of hepatic involvement in HHT can reach 78%. Less commonly, patients may also develop porto-systemic encephalopathy (PSE). However, there are no studies on the possibility that patients with HHT might develop mHE, a highly plausible hypothesis considering the presence of diffuse macroscopic and microscopic porto-systemic shunt in this pathological condition.

The goal of this study is to assess the agreement between the outcomes of adolescents with attention deficit hyperactivity disorder (ADHD) who participated in Participation and Environment Measurement Child & Youth (PEM-CY) by the adolescent and primary caregiver. There are a few studies in the literature that look at the participation of teenagers with ADHD, but none that look at the participation of adolescents with ADHD from both the perspective of the adolescents and the primary caregivers. The primary caregiver's measurement results and the adolescents' measurements do not concur, according to this study's hypothesis.

Cross-sectional observational study of the relationship between speech patterns and psychiatric symptoms and disorders.

The Attention Deficit/ Hyperactivity Disorder (ADHD) is a developmental disorder which affects 3 to 5 % of school age children. This disorder persists in the adulthood for 60 % of subjects. Children with ADHD are sleepier during the day than normal children. However, there is no information concerning the diurnal sleepiness of adults with ADHD and the impact of this sleepiness on their driving capacity. The investigators postulate that the negative impact of ADHD is due to an awakening disorder which adds to the attentional disorder. The aim of this study is to estimate both the sleepiness by a Maintenance Wakefulness Test (MWT) and the capacity to drive in adults with ADHD.

ADHD in the adult population is associated with several measures of harmful dysfunction. For example, adult ADHD is associated with high rates of separation/divorce and never-married status, lower educational attainment and occupational achievement, absenteeism, presenteeism, and job termination, as well as decreased social function. Individuals with adult ADHD are more likely than controls to have a comorbid diagnosis of bipolar disorder, alcohol and substance abuse, as well as antisocial personality disorder. Psychostimulants are the most frequently employed medications in the treatment of adult ADHD. Several psychostimulants are Health Canada and US FDA-approved for the treatment of ADHD symptoms in adulthood. Hitherto, no trial has evaluated the safety and efficacy of a psychostimulant in the treatment of ADHD symptomatology in adult individuals with bipolar disorder. Vyvanse is the first prodrug stimulant indicated for the treatment of adult (and pediatric) ADHD. Vyvanse is a therapeutically inactive molecule (i.e. prodrug). After oral ingestion, lisdexamfetamine is converted to l-lysine, a naturally occurring essential amino acid, and active d-amphetamine, which is responsible for the drug's activity. Vyvanse provides a longer duration of effect consistent throughout the day with reduced potential for risk of abuse. Vyvanse is generally well tolerated with an adverse event profile similar to other psychostimulant medications. Available evidence indicates that in most treated subjects, Vyvanse is weight-neutral and/or is associated with weight loss. Moreover, in some individuals, it is associated with improvement in both glucose and lipid homeostasis. The evaluation of safety/tolerability profiles as well as the effectiveness of lisdexamfetamine in a "real-world" population has significant translational value.

4.4 million children and adolescents in the United States have been diagnosed with attention deficit hyperactivity disorder (ADHD) and more than half are treated with medication. Most ADHD medications are stimulants, which activate the sympathetic nervous system (SNS). SNS activation is closely associated with vascular functional and mechanical abnormalities. Therefore, ADHD medications, via instigating SNS activation and altering the hemodynamic profile, may have untoward effects on the vasculature and increase risk of developing cardiovascular disease in children and adolescents who use them. Our overall objective in this study is to determine whether ADHD medication use is associated SNS activation, endothelial dysfunction, and arterial stiffness in children and adolescents. We will address this objective by conducting a case-control study and obtain non-invasive measures of SNS activation, endothelial function, and arterial stiffness in children and adolescents (8-17 years old) with (using stimulant medication) and without ADHD.

The ultimate goal of this study is to find the association between specific polymorphism of candidate genes and medication response in attention deficit hyperactivity disorder (ADHD) patients. These results will lead the investigators' team: (1) to resolve controversies over inconsistent findings in previous pharmacogenetic studies; (2) to study the medication effect on the neuropsychological functions that are useful candidate endophenotypes for ADHD; (3) to delineate the nature and the effect of gene-gene interaction in the drug response of ADHD patients.

This study will explore the brain in men with and without attention deficit hyperactivity disorder (ADHD). It will use positron emission tomography (PET) and magnetic resonance imaging (MRI) to study brain function and nerve cell communication involving phospholipids (fatty molecules that make up the covering of nerve cell fibers in the brain and are involved in communication between the cells). It will also look at how nerve cell communication is related to blood flow. In particular, the study will explore communication through the dopamine system, which is one of the main neurotransmitter systems in the brain involved in ADHD. Healthy men and men with ADHD between 18 and 55 years of age may be eligible for this study. Participants undergo the following procedures: "<TAB>Medical history and psychiatric and medical evaluation, including blood and urine tests. "<TAB>MRI scan. This test uses a strong magnetic field and radio waves to obtain images of the brain. The subject lies still on a table that slides into the scanner (a metal cylinder) during the scanning. "<TAB>PET scanning. The subject lies on the scanner bed with his head held still using a special facemask. A catheter (plastic tube or needle) is placed in an artery to collect blood samples and in a vein to inject radioactive isotopes for measuring blood flow and phospholipid metabolism. Scans are done after an injection of a saline solution and again after injection of apomorphine, a medication that turns on dopamine receptors in the brain. The injections are given under the skin of the abdomen, about one and a half hours apart....

This study aims to establish the psychometric properties of the Adult ADHD Quality of Life Scale (AAQoL) and to validate the diagnosis of adult ADHD by ADHD symptoms, other clinical psychiatric symptoms, neuropsychological functioning, social/family/occupational functioning, and intervention effect.

The purpose of this study is examine the efficacy of atomoxetine on executive functioning measures including the Continuous Performance Test (CPT) and the executive function measures of the Cambridge Automated Neuropsychological Test Automated Battery (CANTAB).