My son is 3 yrs and 5 mnths old, he seems to be having some sort of irritation on his penis, I think it itches because he becomes relieved when he scratches it. This has been going on for about 2 days now what could be the problem? He also developed a sudden spot about 3 weeks ago on his head where now his hair does not grow, my research shows that it could be an infection/fungus. He has been using antibiotic alot because he is repeatedly develops a flu. Please explain, could the two problems (spot on head and itchy penis be related), what is the solution?