Developmental Disorders, Genetic Disorders and Mental Health Disorders seen in Children and Adolescents

• Angelman syndrome
• Anxiety disorders including Separation Anxiety Disorder, Selective Mutism (extreme shyness), Social Anxiety Disorder (Social Phobia), Specific Phobia, Panic Disorder, Agoraphobia and Generalised Anxiety Disorder
• Ataxia Telangiectasia
• Attention Deficit Hyperactivity Disorder (ADHD) and Attention Deficit Disorder (ADD)
• Bipolar Disorder and Depression
• Cerebral Palsy
• Cerebrotendinous Xanthomatosis (CTX)
• CHARGE association
• Coffin-Lowry syndrome
• Communication Disorders including Expressive and/or Receptive Language Disorder or Delay; Social (Pragmatic) Communication Disorder (previously known as Semantic-Pragmatic Disorder; Speech Sound Disorder (previously known as Phonological Disorder); Childhood-Onset Fluency Disorder (Stuttering); 
• Congenital Rubella syndrome
• Cornelia de Lange syndrome
• Cri du Chat syndrome
• Cystic Fibrosis
• Deafness and Hearing Impairment
• Disruptive, Impulse-Control and Conduct Disorders including Oppositional Defiant Disorder (ODD), Conduct Disorder, Intermittent Explosive Disorder, Pyromania and Kleptomania
• Down Syndrome
• Edwards syndrome (Trisomy 18)
• Elimination Disorders including Enuresis and Encopresis
• Epilepsy (and Dravet syndrome)
• Feeding and Eating Disorders including Pica, Rumination Disorder, Avoidant/Restrictive Food Intake Disorder, Anorexia Nervosa, Bulimia Nervosa, and Binge-Eating Disorder
• Fetal Alcohol Spectrum Disorder
• Fragile X syndrome
• Gender Dysphoria
• Global Developmental Delay and Intellectual Disability
• Hearing Impairment, Visual Impairment and Deafblindness
• Kabuki syndrome (previously known as Kabuki Make-up syndrome or Niikawa-Kuroki syndrome)
• Larsen's syndrome
• Leukodystrophies
• Lysomal Storage Disorders including Krabbe's disease, Metachromatic Leukodystrophy, Pompe disease, Tay Sach's disease, Hurler's Syndrome (MPS 1), Hunter syndrome (MPS 2), Sanfilippo syndrome (MPS 3), Morquio syndrome (MPS IVA), and Maroteaux-Lamy syndrome (MPS VI
• microcephaly
• mitochondrial respiratory chain disorders
• motor disorders including Developmental Coordination Disorder (also known as Developmental Dyspraxia), Stereotyic Movement Disorder, Tourette's Disorder, and Persistent (Chronic) Motor or Vocal Tic Disorder
• neurometabolic conditions including Lesch-Nyhan Syndrome, Menkes Disease, and Zellweger syndrome
• neuromuscular conditions including Autosomal recessive muscular dystrophy, Duchenne (or Becker) muscular dystrophy, Friedriech's ataxia, and Spinal muscular atrophy conditions including Werdnig-Hoffman
• Obsessive-Compulsive Disorders including Body Dismorphic Disorder, Trichotillomania (Hair-pulling disorder) and Excoriation (Skin-Picking Disorder)
• Opitz G syndrome
• Pallister-killian syndrome
• Patau syndrome (Trisomy 13)
• Phenylketonuria (PKU)
• Prader Willi syndrome 
• Rett syndrome
• Seckel syndrome
• Sleep-Wake Disorders including Insomnia, Hypersomnolence, Narcolepsy, Breathing-related sleep disorders, Circadian rhythm sleep-wake disorders, Sleep walking, Sleep terrors, and Nightmares 
• Smith-Magenis syndrome
• Specific Learning Disorders including Reading Disorder (also known as Developmental Dyslexia)
• Spina Bifida
• Trauma and Stressor-Related Disorders, including Reactive Attachment Disorder (RAD), Disinhibited Social Engagement Disorder, Posttraumatic Stress Disorder (PTSD), Acute Stress Disorder and Adjustment Disorder
• Williams syndrome