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Caffeine may be found in beverages, supplements, and medications. Common food sources include coffee, chocolate, green tea, and soft drinks.

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Related Diseases & Conditions

  • Muscle Spasms Muscle spasms are involuntary muscle contractions that come on suddenly and are usually quite painful. Dehydration, doing...learn more »
    In This Article
    Muscle Spasms Article
    • What is a muscle spasm?
    • What causes a muscle spasm?
    • What are the symptoms and signs of muscle spasms?
    • How are muscle spasms diagnosed?
    • How are muscle spasms treated?
    • Muscle Spasms At A Glance
  • Heat Stroke Heat stroke (heatstroke or sun stroke) is a form of hyperthermia. Heat stroke is a true medical emergency that can be fatal if...learn more »
    In This Article
    Heat Stroke Article
    • Heat stroke facts
    • What is, and who is at risk for heat stroke?
    • What are heat stroke symptoms and signs?
    • What about heat stroke in children?
    • How do you treat a heat stroke victim?
    • How can heat stroke be prevented?
  • Headache Headaches can be divided into two categories: primary headaches and secondary headaches. Migraine headaches, tension headaches,...learn more »
    In This Article
    Headache Article
    • Headache facts
    • What is a headache?
    • How are headaches classified?
    • What are primary headaches?
    • What are secondary headaches?
    • What are cranial neuralgias, facial pain, and other headaches?
    • What causes tension headaches?
    • What are the symptoms of tension headaches?
    • How are tension headaches diagnosed?
    • How are tension headaches treated?
    • What causes cluster headaches?
    • What are the symptoms of cluster headaches?
    • How are cluster headaches diagnosed?
    • How are cluster headaches treated?
    • Can cluster headaches be prevented?
    • What diseases cause secondary headaches?
    • How are secondary headaches diagnosed?
    • What are the exams and tests for secondary headaches?
    • When should I seek medical care for a headache?
  • Anxiety Anxiety is a feeling of apprehension and fear characterized by physical symptoms. Anxiety disorders are serious medical illnesses...learn more »
    In This Article
    Anxiety Article
    • Generalized anxiety disorder facts
    • What is generalized anxiety disorder (GAD)?
    • What are the different types of anxiety?
    • How common is generalized anxiety disorder?
    • What are causes and risk factors for anxiety?
    • What are anxiety symptoms and signs?
    • How is generalized anxiety disorder diagnosed?
    • What is the treatment for anxiety?
    • What are the side effects of anxiety medications?
    • What are complications of generalized anxiety disorder?
    • Can anxiety be prevented?
    • What is the prognosis of generalized anxiety disorder?
    • Are there support groups for those with generalized anxiety disorder?
    • Where can people find additional information on generalized anxiety disorder?
  • Fibromyalgia Fibromyalgia, formerly known as fibrositis, causes chronic pain, stiffness, and tenderness of muscles, tendons, and joints...learn more »
    In This Article
    Fibromyalgia Article
    • Fibromyalgia facts
    • What is fibromyalgia?
    • What causes fibromyalgia?
    • Whom does fibromyalgia affect?
    • What are fibromyalgia symptoms and signs?
    • How is fibromyalgia diagnosed?
    • Are exercise, stress reduction, or changes in diet helpful in the treatment of fibromyalgia?
    • What are medications and other forms of treatment for fibromyalgia?
    • What is the outlook (prognosis) for patients with fibromyalgia?
    • Can fibromyalgia be prevented?
    • What is in the future for fibromyalgia therapy?
    • Where can people find more information about fibromyalgia and support groups?
  • Migraine Migraine is usually periodic attacks of headaches on one or both sides of the head. These may be accompanied by nausea, vomiting,...learn more »
    In This Article
    Migraine Article
    • What is a migraine headache?
    • What are the symptoms of migraine headaches?
    • What are some of the variants of migraine headaches?
    • How is a migraine headache diagnosed?
    • How are migraine headaches treated?
    • What is the treatment for moderate to severe migraine headaches?
    • What other medications are used for treating migraine headaches?
    • How are migraine headaches prevented?
    • What are migraine triggers?
    • What should migraine sufferers do?
    • What are prophylactic medications for migraine headaches?
    • What is the proper way to use preventive medications?
    • What is the treatment for menstrual migraine?
    • Conclusions

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