Your son has developed a rather difficult habit disorder where he pulls out his own hair. Children usually start by pulling out their eyebows and eyelashes. This habit has a very long name:'trichotillomania'. You can read more about it on the internet. It is a difficult habit to break and in children it is often best to say nothing about the habit and it may disappear by itself. Stress is one of the most common causes and in your son's case it is probably the arrival of your new baby which has set him off with this hair pulling habit.Your son is a bit young still but if you would prefer him to be started on treatment he should be seen by a child psychologist. One of the methods psychologists use in treating children with trichotillomania is called habit reversal training and this may help your son.
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