My son cries a lot in his sleep in the middle of the night what is the cause and treatment????

A. Crying of a Baby is mostly because of infantile colic and gas related discomfort which is there commonly in night . It can be relieved by medicine like colicaid or gastica drops cdgontaining dil oil and feniel oil with semethicone. other reasons could be hunger any illness, nasal blockage, ear padin, diaper rash and sometimes more conditions which needs to be ruled out and managed accordingly .