My son was recently to the doctor for bronchitits.  He was running a temp of 102.8  and then it went down to 101.  Doctor put him on an antibiotic.  He developed dizziness and his temp now is 96.4 degrees.  He feels good he said although he seems  to have a sensitivity to light now.  He went to basketball practice today and said the light bothers him, but he said he wasnt dizzy today.  His temp is what worries me, what the heck is going on.  He is 18 years old and had mono last year (about 1 1/2 years ago.)
The main problem of your son appears to be due to the side effect of antibiotic known as photosensitivity. Under the influence of antibiotic (doxycycline or sparfloxacin) if exposed to sunlight the chances of getting skin rash, redness, itching is high. If the temperature is not controlled he must take Paracetamol.