My son is 33 years old. Initially he had meningitis like symptoms 7 years ago but was tested & did not have meningitis. He was negative for Epstein Barr. Every few months he will have a recurrence of symptom when under stress or does not get enough sleep such as severe headache, fatigue, swollen glands, achiness, sore throat, fever. I believe I also had a similar illness when i was in my 20 s but am ok now. My daughter also did when she was in her 20 s. What could this be & what can he take to build his immune system?