These findings reflect those of a study conducted in Finland among schoolchildren, which found that children with
widespread pain reported more emotional and behavioural problems than those
without pain, and showed that tiredness during the day was a risk factor for the persistence of
pain.18 Furthermore, a recent study of children aged 3 — 17 years attending a medical practice in Australia found that children experiencing frequent abdominal
pain were more likely to be anxious and experience sleep disturbances when compared to children with no abdominal
pain.19
But it isn't in fibromyalgia (where people experience
widespread pain without a known cause), food craving and overeating, Parkinson's disease, and speech problems after a stroke.