Call Your Doctor Now (night or day) If

• You feel weak or very sick
• Pain is severe and its the worst headache of your life
• Pain is severe and you have not had severe headaches before
• Stiff neck (can't touch chin to chest)
• Blurred or double vision
• Unsteady walking
• Fever of 103° F (39.4° C) or higher
• Fever of 100.5° F (38.1° C) or higher and you:
  • Are over 60 years of age OR
  • Have diabetes mellitus or a weakened immune system (e.g., HIV positive, cancer chemotherapy, chronic steroid treatment, splenectomy) OR
  • Are bedridden (e.g., nursing home patient, stroke, chronic illness, recovering from surgery)
• Possible exposure to carbon monoxide