PatientPlus articles are written by UK doctors and are based on research evidence, UK and European Guidelines. They are designed for health professionals to use, so you may find the language more technical than the condition leaflets.
These can be usefully classified into psychosocial disorders, habit disorders, anxiety disorders, disruptive behaviour and sleeping problems.
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These may manifest as disturbance in:
- Emotions - eg, anxiety or depression.
- Behaviour - eg, aggression.
- Physical function - eg, psychogenic disorders.
- Mental performance - eg, problems at school.
This range of disorders may be caused by a number of factors such as parenting style which is inconsistent or contradictory, family or marital problems, child abuse or neglect, overindulgence, injury or chronic illness, separation or bereavement.
The child's problems are often multi-factorial and the way in which they are expressed may be influenced by a range of factors including developmental stage, temperament, coping and adaptive abilities of family, and the nature and the duration of stress. In general, chronic stressors are more difficult to deal with than isolated stressful events.
Children do not always display their reactions to events immediately, although they may emerge later. Anticipatory guidance can be helpful to parents and children in that parents can attempt to prepare children in advance of any potentially traumatic events - eg, elective surgery or separation. Children should be allowed to express their true fears and anxieties about impending events.
In stressful situations, young children will tend to react with impaired physiological functions such as feeding and sleeping disturbances. Older children may exhibit relationship disturbances with friends and family, poor school performance, behavioural regression to an earlier developmental stage, and development of specific psychological disorders such as phobia or psychosomatic illness.
It can be difficult to assess whether the behaviour of such children is normal or sufficiently problematical to require intervention. Judgement will need to take into account the frequency, range and intensity of symptoms and the extent to which they cause impairment.
These include a range of phenomena that may be described as tension-reducing.
|Tension-reducing habit disorders|
|Thumb sucking||Repetitive vocalisations||Tics|
|Nail biting||Hair pulling||Breath holding|
|Air swallowing||Head banging||Manipulating parts of the body|
|Body rocking||Hitting or biting themselves|
All children will at some developmental stage display repetitive behaviours but whether they may be considered as disorders depends on their frequency and persistence and the effect they have on physical, emotional and social functioning. These habit behaviours may arise originally from intentional movements which become repeated and then become incorporated into the child's customary behaviour. Some habits arise in imitation of adult behaviour. Other habits such as hair pulling or head banging develop as a means of providing a form of sensory input and comfort when the child is alone.
- Thumb sucking - this is quite normal in early infancy. If it continues, it may interfere with the alignment of developing teeth. It is a comfort behaviour and parents should try to ignore it while providing encouragement and reassurance about other aspects of the child's activities.
- Tics - these are repetitive movements of muscle groups that reduce tension arising from physical and emotional states, involving the head, the neck and hands most frequently. It is difficult for the child with a tic to inhibit it for more than a short period. Parental pressure may exacerbate it, while ignoring the tic can reduce it. Tics can be differentiated from dystonias and dyskinetic movements by their absence during sleep.
- Stuttering - this is not a tension-reducing habit. It arises in 5% of children as they learn to speak. About 20% of these retain the stuttering into adulthood. It is more prevalent in boys than in girls. Initially, it is better to ignore the problem since most cases will resolve spontaneously. If the dysfluent speech persists and is causing concern refer to a speech therapist.
Anxiety and fearfulness are part of normal development; however, when they persist and become generalised they can develop into socially disabling conditions and require intervention. Approximately 6-7% of children may develop anxiety disorders and, of these, 1/3 may be over-anxious while 1/3 may have some phobia. Generalised anxiety disorder, childhood-onset social phobia, separation anxiety disorder, obsessive-compulsive disorder and phobia are demonstrated by a diffuse or specific anxiety predictably caused by certain situations.
School phobia occurs in 1-5% of children and there is a strong association with anxiety and depression. Management is by treating the underlying psychiatric condition, family therapy, parental training and liaison with the school in order to investigate possible reasons for refusal and negotiate re-entry. Behavioural and cognitive treatments show promise, although most evidence-based trials involve children with mental health problems rather than the general population of school refusers per se. More research needs to be done in this area.
Many behaviours, which are probably undesirable but a normal occurrence at an early stage of development, can be considered pathological when they present at a later age. In the young child, many behaviours such as breath holding or temper tantrums are probably the result of anger and frustration at their inability to control their own environment. For some of these situations it is wise for parents to avoid a punitive response and, if possible, to remove themselves from the room. It is quite likely that the child will be frightened by the intensity of their own behaviour and will need comfort and reassurance. While some isolated incidents of stealing or lying are normal occurrences of early development, they may warrant intervention if they persist. Truancy, arson, antisocial behaviour and aggression should not be considered as normal developmental features.
Attention deficit hyperactivity disorder is characterised by poor ability to attend to tasks (eg, makes careless mistakes, avoids sustained mental effort), motor overactivity (eg, fidgets, has difficulty playing quietly) and impulsiveness (eg, blurts out answers, interrupts others). For the diagnosis to be made, the condition must be evident before age 7 years, present for >6 months, seen both at home and school and impeding the child's functioning.  The condition is diagnosed in 3-7% of school-age children.
Methylphenidate (initiated by specialists only) is a stimulant medication that provides reduction of symptoms, at least in the short term. Behavioural modification and neuro-feedback are the non-pharmacological treatments with the largest evidence base. Various dietary interventions have been mooted, of which the addition of essential fatty acids has the widest support.
Sleep disorders can be defined as more or less sleep than is appropriate for the age of the child. By the age of 1-3 months, the longest daily sleep should be between midnight and morning. Sleeping through the night is a developmental milestone but, at the age of 1 year, 30% of children may still be waking in the night. Stable sleep patterns may not be present until age 5 years but parental or environmental factors can encourage the development of circadian rhythm.
See separate article Sleep Problems in Children for more details.
Further reading & references
- Stadelmann S, Perren S, Groeben M, et al; Parental separation and children's behavioral/emotional problems: the impact of parental representations and family conflict. Fam Process. 2010 Mar;49(1):92-108.
- Giannakopoulos G, Mihas C, Dimitrakaki C, et al; Family correlates of adolescents' emotional/behavioural problems: evidence from a Greek school-based sample. Acta Paediatr. 2009 Aug;98(8):1319-23. Epub 2009 Apr 27.
- Sirvinskiene G, Zemaitiene N, Zaborskis A, et al; Infant difficult behaviors in the context of perinatal biomedical conditions and early child environment. BMC Pediatr. 2012 Apr 11;12:44.
- Dufton LM, Dunn MJ, Compas BE; Anxiety and somatic complaints in children with recurrent abdominal pain and anxiety disorders. J Pediatr Psychol. 2009 Mar;34(2):176-86. Epub 2008 Jun 24.
- Dogan-Ates A; Developmental differences in children's and adolescents' post-disaster reactions. Issues Ment Health Nurs. 2010 Jul;31(7):470-6.
- Ellis C et al; Childhood Habit Behaviors and Stereotypic Movement Disorder, Apr 2012
- Generalised Anxiety Disorder, Anxiety Care UK, 2012
- Nutter P et al; Pediatric Generalized Anxiety Disorder, Medscape, Feb 2012
- Steinhausen HC, Muller N, Metzke CW; Frequency, stability and differentiation of self-reported school fear and truancy in a community sample. Child Adolesc Psychiatry Ment Health. 2008 Jul 14;2(1):17.
- Pina AA, Zerr AA, Gonzales NA, et al; Psychosocial Interventions for School Refusal Behavior in Children and Adolescents. Child Dev Perspect. 2009 Apr 1;3(1):11-20.
- Prudent N, Johnson P, Carroll J, et al; Attention-deficit/hyperactivity disorder: presentation and management in the Haitian American child. Prim Care Companion J Clin Psychiatry. 2005;7(4):190-7.
- King S, Griffin S, Hodges Z, et al; A systematic review and economic model of the effectiveness and cost-effectiveness of methylphenidate, dexamfetamine and atomoxetine for the treatment of attention deficit hyperactivity disorder in children and adolescents. Health Technol Assess. 2006 Jul;10(23):iii-iv, xiii-146.
- Jahromi LB, Kasari CL, McCracken JT, et al; Positive effects of methylphenidate on social communication and self-regulation in children with pervasive developmental disorders and hyperactivity. J Autism Dev Disord. 2009 Mar;39(3):395-404. Epub 2008 Aug 28.
- Hodgson K, Hutchinson AD, Denson L; Nonpharmacological Treatments for ADHD: A Meta-Analytic Review. J Atten Disord. 2012 May 29.
- Attention deficit hyperactivity disorder: Diagnosis and management of ADHD in children, young people and adults; NICE Clinical Guideline (September 2008)
- Bjornstad G, Montgomery P; Family therapy for attention-deficit disorder or attention-deficit/hyperactivity disorder in children and adolescents. Cochrane Database Syst Rev. 2005 Apr 18;(2):CD005042.
- Hurt EA, Arnold LE, Lofthouse N; Dietary and nutritional treatments for attention-deficit/hyperactivity disorder: current research support and recommendations for practitioners. Curr Psychiatry Rep. 2011 Oct;13(5):323-32.
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Dr Laurence Knott
Dr Laurence Knott
Dr John Cox