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Background:Attention deficit hyperactivity disorder (ADHD) is a common recognized psychiatric
disorder of Childhood and its cause is still unknown.during the last years number of studies have
appearedon the subject of relationships between thyroid hormones and psychiatric disease.
Objective:To assess the association between thyroid stimulating hormone (TSH) concentrations, for the
Purpose of comparing the hormone levels among school children with ADHD, and those healthy school
Children with pro-social traits.
Subjects &Methods: A cross sectional study was conducted for the period from the first of June - 2013 to
the 31st March -2014. The study sample was (100) school children diagnosedwith behavioral disorders
including ADHD with or without conduct or aggressive disorder. In comparison with (100)school
children characterized by pro-social traits as a control group. Assessment of behavioural disorders
depended on Rutter behavioralQuestionnaire (RBQ), as a behavioral scale used by teachers for
assessment of school children behavior. Measurement of serum TSH concentration level was done to
school children with ADHD, those with conduct disorder, and to the controlsgroup.
Results:Out of 100 school children who are diagnosed as having ADHD, 65% were males and 35% were
females. School children who were found to have conduct disorder comorbid with ADHD constituted
49%, of them 32% were males and 17% were females. School children diagnosed to have ADHD, without
aggressive behavior constituted 33%, and 18% for males and females respectively.
There was a significantly lower TSH level (P <0.05) among school children with prosocialcharacter
(2.0545mIU/L +_3.34410), when compared to ADHD group ( 2.9902mIU/L+_1.65301 ), and those with
ADHD and aggressive behavior was (2.5590mIU/L +_1.43565).
Keywards: Hyperactivity disorder; Attention deficit hyperactivity disorder (ADHD); Thyroid stimulating
hormone; conduct disorder; Prosocial behavior; Anti-social behavior: Rutter Child Questionnaire
(RCQ); Rutter Behaviour Scale (RBS).