Thanks for writing to health care magic.
A baby's head is normally hotter than the rest of the body. This is a normal phenomenon. You need not worry regarding this.
A baby may cry because of many reasons.
The cry could be because of a very simple reason like he just wanted to be carried and is bored.
Some times the excessive cry could be because of colic
. This phenomenon is temporary and subsides over a period of time. Burping etc may help.
Hope this helps.