Child psychiatry Flashcards
What is autism
Pervasive developmental disorder
Triad of complications
- Difficulty in social interactions
- Impaired communication
- Restricted, stereotyped interests and behaviours
What are the prenatal causes of autism
Genetics
Parental age (mothers >40)
Drugs (sodium valproate)
Infection (rubella)
What are the antenatal causes of autism
Obstetric complications
Low gestational age at birth
Low birthweight
What are the postnatal causes of autism
Toxins (mercury, lead)
Pesticide exposure
What are the risk factors for autism
Male
Genetics
Advanced parental age
Parental psychiatric disorders
Prematurity
Maternal medication use
What are the clinical features of autism
Most parents have concerns by 12-18 months
Onset before age 3 for diagnosis (otherwise atypical)
Asocial
- Few social gestures, lack of eye contact, no smiling, no response to name, no interest in others, no emotional expressions, limited awareness of social rules
Behaviour restricted
- Rocking, twisting, upset at change of routine, prefer certain foods/clothes…, obsessively pursue interests, fascination with sensory things
Communication impaired
- Distorted and delayed speech, echolalia (repetition of words)
What are the investigations for autism
Full developmental assessment
Sensory tests
Screening tools (CHAT)
What are the differentials for autism
Asperger’s syndrome
Rett’s syndrome
Childhood disintegrative disorder
Learning disability
Deafness
Childhood schizophrenia
What is the management for autism
CBT
Daily living skills training
Access to education
Melatonin
- For sleep disorders despite behavioural intervention
Play-based strategies
Interventions for challenging behaviour
- Modify environment
- Antipsychotics
What is hyperkinetic disorder
Aka ADHD
Early onset persistent pattern of
- Inattention
- Hyperactivity
- Impulsivity
Present in more than one situation
What are the causes of hyperkinetic disorder
Genetic
Neurochemical
- Abnormal dopaminergic pathway
Neurodevelopmental
- Abnormal pre-frontal cortex
Social
- Social deprivation, family conflict, parental substance use
What is the epidemiology of ADHD
3 times more common in males
Onset usually 3-7
What criteria need to be met for a diagnosis of ADHD
Onset begore age 7
> 6 months duration
IQ >150
What are the investigations for ADHD
Bloods
- Routine, TFTs
Hearing test
Rating scales
What are the differentials for ADHD
Learning disability/dyslexia
Oppositional defiant disorder
Conduct disorder
Autism
Sleep disorder
Mood disorders
Anxiety disorder
Hearing impairment
What is the management for ADHD
Support parents and teachers
- Normally picked up at school
Pre-school
- Parent training and education (reinforce positive behaviour)
School-goers
- Psychoeducation, CBT, social skills training
- Severe cases: methylphenidate (CNS stimulant, side effects headaches, insomnia, loss of appetite)
What is a learning disability
State of arrested or incomplete development of the mind
Triad of
- Low intellectual performance
- Onset at birth/during childhood
- Wide range of functional impairments
What are the classifications of severity of learning disabilities
Mild
- IQ 50-70
- Mental age 9-12
Moderate
- IQ 35-49
- Mental age 6-9
Severe
- IQ 20-34
- Mental age 3-6
Profound
- IQ <20
- Mental age <3
What are the causes of learning disability
Genetic
Antenatal
- Congenital infections, nutritional deficiency, intoxication, endocrine disorders, physical damage antepartum haemorrhage, pre-eclampsia
Perinatal
- Birth asphyxia, haemorrhage, neonatal sepsis
Neonatal
- Hypoglycaemia, meningitis, infection
Postnatal
- Infection, metabolic abnormality, cerebral palsy
Environmental
- Neglect, non-accidental injury, malnutrition, socioeconomic deprivation
Psychiatric
- Autism, Rett’s syndrome
What are the investigations for learning disabilities
Before birth
- Amniocentesis, chorionic villus sampling, genetic testing and karyotyping
- For Down’s syndrome: b-HCG, PAPP-A, nuchal translucency
After birth
- Bloods
- CT/MRI head
- IQ test
What is the management for learning disabilities
Treat physical health problems
Antipsychotics for challenging behaviour
CBT
Encourage positive behaviour
Family education programmes
Genetic counselling
Antenatal diagnosis