Hello Doctor, My 2 year old son cries for no reason. He does not understand when we say no to something and cries even more. When asked why he is crying, he does not say anything. Ex. If we treat him with a piece of cake when he asks and we say no when he asks for more and many such other reasons. He does not share anything with his cousins and makes an issue if someone eats out of his share. Sometimes, he wakes up at night and just cries, keeps kicking and does not say anything when asked. We are worried if these are ADHD symptoms. Kindly help.