"Children are not just small adults" - how often have you heard this bandied around? But it is true!
There are specific injuries and illnesses that occur in children that do not occur in adults and vice versa. Thus when having your child evaluated for a sporting injury or ongoing pain issue, these need to be taken into account. Common adult issues are uncommon in children (until their late adolescent years) e.g. rotator cuff injuries, plantar fasciitis etc.