What Could Chapped Penile Head With Swelling And Burning Indicate?

My husband is 5'9, 165 pounds, and is 19 years old. He is uncircumsised and his penis has been cracking lately. There is chapped skin on the uncircumsised skin head of his penis. The shapped skin has happened before so we didn't think anything was seriously wrong, but when he woke up this morning the same skin that is usually chapped was swollen. He said that it burns or hurts slightly to urinate and when we have sex.