Symptoms: Possible Problems: What To Do: Headache. Adverse reaction or side Consult doctor about Use of prescription or non- effect of drug. prescription drug. prescription drug. Discontinue use of non- prescription drug.

Symptoms: Possible Problems: What To Do: Severe headache. Common occurrence with See Fever charts (in Fever. infection. Symptoms section).

Symptoms: Possible Problems: What To Do: Headache. Common occurrence after See Head Injury. Recent head injury. head injury. No other symptoms.

Symptoms: Possible Problems: What To Do: Headache. Severe vascular headache. See Migraine. Vision disturbance before headache. Nausea or vomiting.

Symptoms: Possible Problems: What To Do: Headache in forehead or back Effect of stress. See Anxiety. of head. See Headache, Tension. Tense, stressed feeling. See Depression. Sleeping difficulty.

Symptoms: Possible Problems: What To Do: Sudden onset of headache. Chronic headache disorder. See Headache, Cluster. Pain around eyes. Headache occurs at same time every day.

Symptoms: Possible Problems: What To Do: Pain or tenderness around Sinus infection. See Sinusitis. eyes and cheekbones that worsens when bending head forward. Recent cold or nasal allergies.

Symptoms: Possible Problems: What To Do: Headache without pain around Virus infection. See Cold, Common. eyes and cheekbones. Runny or stuffy nose.

Symptoms: Possible Problems: What To Do: Headache. Caffeine withdrawal. Reduce consumption of Decreased consumption of caffeine gradually. caffeine-containing beverages Use a non-prescription (coffee, colas, cocoa, tea). pain reliever, such as acetaminophen.

Symptoms: Possible Problems: What To Do: Headache, plus any of Circumstantial headache. Use a non-prescription following: No underlying disorder. pain reliever, such as Unusually long time since acetaminophen. eating. Excessive alcohol consumption. Stuffy, smoky or noisy room. Exposure to strong sunlight.

Symptoms: Possible Problems: What To Do: Headache after excessive “Hangover.” Use a non-prescription alcohol consumption. pain reliever, such as Nausea or vomiting. acetaminophen.

Symptoms: Possible Problems: What To Do: Severe headache that worsens Bleeding in membrane Call doctor now. when bending head forward. around brain. See Subarachnoid Eyes sensitive to light. Hemorrhage. Lethargy. See Brain or Epidural Confusion. Abscess. No recent head injury.

Symptoms: Possible Problems: What To Do: Headache that worsens when Infection of membranes Call doctor now. bending head forward. around brain. See Meningitis, Aseptic. Fever. See Meningitis, Eyes sensitive to light. Bacterial.

Symptoms: Possible Problems: What To Do: Headache. Excess pressure in eye. Call doctor now. Eye pain. See Glaucoma, Primary Blurred vision. Angle Closure. Nausea or vomiting. No injury to eye.

Symptoms: Possible Problems: What To Do: Habitual headache on waking; High blood pressure. See Hypertension. no excessive alcohol consumption. Brain tumor. See Brain Tumor. Double vision. Nausea or vomiting.

Symptoms: Possible Problems: What To Do: Headache after reading or Strain on neck muscles See Headache, Tension. straining to see. (not strain on eyes).

Symptoms: Possible Problems: What To Do: Headache; nausea; vomiting. Lack of oxygen. See Altitude Illness. Ascent to higher altitude.

Symptoms: Possible Problems: What To Do: Headache. Gas inhalation. See Carbon Monoxide Dizziness. Poisoning. Nausea; vomiting. Faintness.

Symptoms: Possible Problems: What To Do: Headache. Fungal infection. See Cryptococcosis. Stiff neck. Fever.

Symptoms: Possible Problems: What To Do: Headache. Bacterial infection. See Legionnaire’s General ill feeling. Disease. Chills and fever. Muscle aches.

Symptoms: Possible Problems: What To Do: Headache. Parasite infection. See Malaria. Fatigue and nausea. Travel to foreign country.