CHILD’S HEALTH/SPECIFIC PROBLEMS BEHAVIOURS: HEAD-BANGING’S CAUSE AND CLINICAL FEATURES
Parents regard head-banging in young children as one of the more distressing behaviours in childhood. The sight of their toddler repeatedly banging his head against the cot or on the floor, often with a force so violent that it seems inevitable that a serious injury will be sustained, causes intense concern in most parents. Yet this is a behaviour that is relatively common, occurring in 10%-15% of young children, with boys outnumbering girls by a ratio of 3 to 1, and there are virtually never any serious consequences. The peak age for head-banging is from about 6 months to 3 years, and the vast majority of children outgrow it, in the same way that they outgrow other rhythmic, repetitive, self-stimulatory behaviours (body-rocking, thumb-sucking).
Cause
It is not known why some children engage in head-banging. Nor is it clear why it is more common in boys than girls. Like other rhythmic, self-stimulatory behaviours, it seems to soothe and comfort young children at a particular developmental age and then becomes unnecessary as the child matures and his repertoire of coping behaviours expands. It seems to be a response to stress or discomfort, although usually no distress is discernible to the parents. It may increase in frequency and duration during periods of insecurity or stress such as separation or illness.
Head-banging, along with other repetitive behaviours such as body-rocking, is seen more frequently in certain groups of children, such as those with mental retardation, autism, those who are blind, and often in institutionalised youngsters. Again, the reason for this increased frequency is not clear. The persistence of head-banging may be associated with underlying psychological or emotional problems.
Clinical features
The usual picture is of a baby, or particularly a toddler, repeatedly hitting his forehead against the headboard of the cot or bed, or against the mattress, the floor, or even against the wall. Often it occurs at bedtime, but it may happen at any time of the day. The duration varies from a few minutes to up to an hour or even more. Although it appears that considerable force is being used and it seems to the parents that the child must surely sustain an injury, it does not seem to bother the child at all. In fact the opposite is true — the child appears to enjoy it.
Frequently there will be a bruise, welt, callus or even an abrasion on the child’s forehead. Very rarely will the child’s actions result in any bleeding, and he never suffers any serious injury from the head-banging.
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