My son was diagnosed and treated for lyme 5 years ago. He had lyme titers taken after antibiotic course and titers went down. So we figured he's cured. Now he always complains about aches and pains in knees, back, etc. He is very tired but could be due to taking Accutane for acne. I was told by his doc that once he was finished with antibiotics he didn't have lyme's anymore. But now I am beginning to wonder if he still has it. Is there a test that he can have done?