Many children and youth will exhibit some of the following characteristics and behaviours at various times during normal childhood development.
- getting significantly lower marks in school
- avoiding friends and family
- having frequent outbursts of anger and rage
- losing his or her appetite
- having difficulty sleeping
- rebelling against authority
- drinking a lot and/or using drugs
- not doing the things he or she used to enjoy
- damaging other people's property
- worrying constantly
- experiencing frequent mood swings
- not concerned with his or her appearance
- obsessed with his or her weight
- lacking energy or motivation
- hitting or bullying other children
- attempting to injure him or her self
But these characteristics and behaviours may be signs of an underlying mental health disorder if they:
- are intense
- persist over long periods of time
- are inappropriate for the child's age
- interfere with the child's life.
Children and youth with the most serious mental health disorders, such as severe psychosis or schizophrenia may exhibit:
- distorted thinking
- excessive anxiety
- odd body movements
- abnormal mood swings
- acting overly suspicious of others
- seeing or hearing things that others don’t see or hear



