my daughter does not sleep either in the night or day. her sleeping duration is very less and in case she does sleep she wakes up after every 1/2 hr or 1 hr then I have to make her sleep and the I put her on the bed then again after 1/2 hr or 1 hr she starts crying. this happens for the whole night and even in the afternoon also or whenever she sleeps. and she started doing like this after she was 4 months old sir/ madam please help me out. what can be reason for this? is there any medical reason or anything else? please help me..