The dear doctor! Till 3 years the son, it is possible to tell or say, was quiet, obedient reb...

[Olga]

The dear doctor! Till 3 years the son, it is possible to tell or say, was the quiet, obedient child. And after 3 years as have changed: contradicts continually, nervous, at night cries, badly sleeps. Than it can be explained, calmed?

[Pisarenko N.A.]

The normal behaviour of children at this age too differs excitability, desire to contradict, koprizami. If there were any problems at early age, such symptomatology amplifies. For the exact diagnosis you should be shown the child to the expert but while behave tenderly, calm or abirritate, go towards in whims (well, up to a reasonable limit, certainly).