Should I take my 18 year old son to the hospital if his fever doesn t go below 102? He went to the clinic yesterday and was prescribed antibiotics and zyrtec for a possible meningismus. He has headache, fever, dizziness, and some numbness on his fingertips. I gave him Tylenol and it brought his 105 fever to 102. He began taking the medications this morning. A few hours later he experienced some faintness, but he did not faint. He has poor appetite and trouble sleeping.