Hello! To my son 4 years. Last week he has ceased to hear, to...

[Evgenie]

Hello!
To my son 4 years. Last week he has ceased to hear, when to it or him;them address, yet will not raise or increase a voice. Checked hearing - it's OK. Prompt how to behave, please, in this situation
Evgenie

[Pisarenko N.A.]

All OK, do not shout only. If does not listen, stroke on a head, touch an arm or a hand, catch a view. All this will pass or take place.