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A Medical Dictionary of Medical Terminology
  

migraine

Migraine

What are migraines?

Migraines are a recurring type of headache. They cause moderate to severe pain that is throbbing or pulsing. The pain is often on one side of your head. You may also have other symptoms, such as nausea and weakness. You may be sensitive to light and sound.

What causes migraines?

Researchers believe that migraine has a genetic cause. There are also a number of factors that can trigger a migraine. These factors vary from person to person, and they include:

Some people have found that certain foods or ingredients can trigger headaches, especially when they are combined with other triggers. These foods and ingredients include:

Who is at risk for migraines?

About 12% of Americans get migraines. They can affect anyone, but you are more likely to have them if you:

What are the symptoms of migraines?

There are four different phases of migraines. You may not always go through every phase each time you have a migraine.:

Migraines are more common in the morning; people often wake up with them. Some people have migraines at predictable times, such as before menstruation or on weekends following a stressful week of work.

How are migraines diagnosed?

To make a diagnosis, your health care provider will:

An important part of diagnosing migraines is to rule out other medical conditions which could be causing the symptoms. So you may also have blood tests, an MRI or CT scan, or other tests.

How are migraines treated?

There is no cure for migraines. Treatment focuses on relieving symptoms and preventing additional attacks.

There are different types of medicines to relieve symptoms. They include triptan drugs, ergotamine drugs, and pain relievers. The sooner you take the medicine, the more effective it is.

There are also other things you can do to feel better:

There are some lifestyle changes you can make to prevent migraines:

If you have frequent or severe migraines, you may need to take medicines to prevent further attacks. Talk with your health care provider about which drug would be right for you.

Certain natural treatments, such as riboflavin (vitamin B2) and coenzyme Q10, may help prevent migraines. If your magnesium level is low, you can try taking magnesium. There is also an herb, butterbur, which some people take to prevent migraines. But butterbur may not be safe for long-term use. Always check with your health care provider before taking any supplements.

NIH: National Institute of Neurological Disorders and Stroke

Headache

Almost everyone has had a headache. Headache is the most common form of pain. It's a major reason people miss days at work or school or visit the doctor.

The most common type of headache is a tension headache. Tension headaches are due to tight muscles in your shoulders, neck, scalp and jaw. They are often related to stress, depression or anxiety. You are more likely to get tension headaches if you work too much, don't get enough sleep, miss meals, or use alcohol.

Other common types of headaches include migraines, cluster headaches, and sinus headaches. Most people can feel much better by making lifestyle changes, learning ways to relax and taking pain relievers.

Not all headaches require a doctor's attention. But sometimes headaches warn of a more serious disorder. Let your health care provider know if you have sudden, severe headaches. Get medical help right away if you have a headache after a blow to your head, or if you have a headache along with a stiff neck, fever, confusion, loss of consciousness, or pain in the eye or ear.

NIH: National Institute of Neurological Disorders and Stroke

Caffeine

What is caffeine?

Caffeine is a bitter substance that occurs naturally in more than 60 plants including:

There is also synthetic (man-made) caffeine, which is added to some medicines, foods, and drinks. For example, some pain relievers, cold medicines, and over-the-counter medicines for alertness contain synthetic caffeine. So do energy drinks and "energy-boosting" gums and snacks.

Most people consume caffeine from drinks. The amount of caffeine in different drinks can vary a lot, but it is generally:

What are caffeine's effects on the body?

Caffeine has many effects on your body's metabolism. It:

Within one hour of eating or drinking caffeine, it reaches its peak level in your blood. You may continue to feel the effects of caffeine for four to six hours.

What are the side effects from too much caffeine?

For most people, it is not harmful to consume up to 400mg of caffeine a day. If you do eat or drink too much caffeine, it can cause health problems, such as:

Some people are more sensitive to the effects of caffeine than others.

What are energy drinks, and why can they be a problem?

Energy drinks are beverages that have added caffeine. The amount of caffeine in energy drinks can vary widely, and sometimes the labels on the drinks do not give you the actual amount of caffeine in them. Energy drinks may also contain sugars, vitamins, herbs, and supplements.

Companies that make energy drinks claim that the drinks can increase alertness and improve physical and mental performance. This has helped make the drinks popular with American teens and young adults. There's limited data showing that energy drinks might temporarily improve alertness and physical endurance. There is not enough evidence to show that they enhance strength or power. But what we do know is that energy drinks can be dangerous because they have large amounts of caffeine. And since they have lots of sugar, they can contribute to weight gain and worsen diabetes.

Sometimes young people mix their energy drinks with alcohol. It is dangerous to combine alcohol and caffeine. Caffeine can interfere with your ability to recognize how drunk you are, which can lead you to drink more. This also makes you more likely to make bad decisions.

Who should avoid or limit caffeine?

You should check with your health care provider about whether you should limit or avoid caffeine if you:

What is caffeine withdrawal?

If you have been consuming caffeine on a regular basis and then suddenly stop, you may have caffeine withdrawal. Symptoms can include:

These symptoms usually go away after a couple of days.

Dizziness and Vertigo

When you're dizzy, you may feel lightheaded, woozy, or disoriented. If you feel like you or the room are spinning, you have vertigo. These feelings may make you lose your balance.

Dizziness can have many different causes. A sudden drop in blood pressure or being dehydrated can make you dizzy. Many people feel lightheaded if they get up too quickly from sitting or lying down. Certain medicines and problems with your inner ear may cause dizziness. So can motion sickness. Sometimes dizziness can be a symptom of other disorders.

As people get older, they may have more health problems and take more medicines. This makes them more likely to have problems with dizziness and balance.

Dizziness usually gets better by itself or is easily treated. If you are dizzy often, you should see your health care provider to find the cause.

NIH: National Institutes of Health

Antidepressants

What are antidepressants?

Antidepressants are prescription medicines to treat depression. Depression is more than feeling a little sad or "blue" for a few days. It's a very common, serious medical illness that affects your mood and general mental health It can make you feel tired, hopeless, worried, or fearful. It can change your thinking, sleeping, and eating. Depression may make some people think about ending their lives.

But antidepressants can help many people who have depression. Researchers think antidepressants may help improve the way your brain uses certain chemicals that control mood or stress.

Are antidepressants used for other conditions?

A health care provider may prescribe antidepressants for anxiety, chronic pain, or insomnia. Sometimes providers also prescribe antidepressants for other conditions.

What are the different types of antidepressants?

There are many types of antidepressants. Each one works differently. Providers usually prescribe newer antidepressants first because they don't cause as many side effects as older types. They also seem to help more kinds of depression and anxiety problems.

Most of the newer antidepressants belong to one of these three groups:

If these antidepressants don't help, your provider might suggest one of the older antidepressants. The older types include tricyclic antidepressants (TCAs), tetracyclics, and monoamine oxidase inhibitors (MAOIs). Even though these antidepressants may cause more serious side effects, the benefits may outweigh the risks for some people.

Which type of antidepressant is right for me?

Our bodies and brains all work differently. That means one antidepressant won't work for everyone. You may need to try two or more medicines before you find one that works for you.

Your provider will work with you to choose the best option to try first. You'll consider questions such as:

How long do antidepressants take to work?

Antidepressants usually take 4 to 8 weeks to work, so you'll need to be patient. You may notice that some problems, such as sleeping and eating, get better before your mood improves. That's a good sign. You may just need to give the medicine a little more time to do its job.

Sometimes an antidepressant helps at first, but symptoms return while you're still taking it. But there's usually another one you can try. To get more relief from depression, your provider may suggest combining two antidepressants, using another kind of medicine with an antidepressant, or adding talk therapy or other approaches to improve your mental health.

How long will I need to take an antidepressant?

When an antidepressant starts to work, you and your provider can decide how long you need to stay on it. The typical length of treatment is 6 to 12 months, but some people may stay on antidepressants for much longer.

What are the side effects of antidepressants?

Not everyone has side effects from antidepressants. But if you do have them, they're usually mild and may get better over time as your body gets used to the new medicine.

The most common side effects from antidepressants include:

When thinking about side effects, it's important to remember that there are also risks from not treating depression. Your provider can help you think through the pros and cons of all your options.

If you have any side effects from antidepressants, your provider may suggest ways to manage them while you wait to see if the antidepressant will work. If the side effects bother you too much, you may need to change antidepressants. But you should never change your dose or stop taking an antidepressant on your own.

If you have serious problems or notice any changes that worry you, such as new or worsening symptoms, unusual changes in your mood, or you start acting differently, call your provider right away.

In some cases, children, teenagers, and young adults under 25 may be more likely to think about hurting or killing themselves when starting antidepressants or when the dose is changed. Get medical help right away if this happens.

What can I do to take antidepressants safely?

Antidepressants are generally safe when you use them correctly:

NIH: National Institute of Mental Health

Anxiety

What is anxiety?

Anxiety is a feeling of fear, dread, and uneasiness. It might cause you to sweat, feel restless and tense, and have a rapid heartbeat. It can be a normal reaction to stress. For example, you might feel anxious when faced with a difficult problem at work, before taking a test, or before making an important decision. It can help you to cope. The anxiety may give you a boost of energy or help you focus. But for people with anxiety disorders, the fear is not temporary and can be overwhelming.

What are anxiety disorders?

Anxiety disorders are conditions in which you have anxiety that does not go away and can get worse over time. The symptoms can interfere with daily activities such as job performance, schoolwork, and relationships.

What are the types of anxiety disorders?

There are several types of anxiety disorders, including:

What causes anxiety disorders?

The cause of anxiety is unknown. Factors such as genetics, brain biology and chemistry, stress, and your environment may play a role.

Who is at risk for anxiety disorders?

The risk factors for the different types of anxiety disorders can vary. For example, GAD and phobias are more common in women, but social anxiety affects men and women equally. There are some general risk factors for all types of anxiety disorders, including:

What are the symptoms of anxiety disorders?

The different types of anxiety disorders can have different symptoms. But they all have a combination of:

Using caffeine, other substances, and certain medicines can make your symptoms worse.

How are anxiety disorders diagnosed?

To diagnose anxiety disorders, your health care provider will ask about your symptoms and medical history. You may also have a physical exam and lab tests to make sure that a different health problem is not the cause of your symptoms.

If you don't have another health problem, you will get a psychological evaluation. Your provider may do it, or you may be referred to a mental health professional to get one.

What are the treatments for anxiety disorders?

The main treatments for anxiety disorders are psychotherapy (talk therapy), medicines, or both:

Support groups and stress management techniques may also be helpful.

NIH: National Institute of Mental Health

Botox

Botox is a drug made from a toxin produced by the bacterium Clostridium botulinum. It's the same toxin that causes a life-threatening type of food poisoning called botulism. Doctors use it in small doses to treat health problems, including:

Botox injections work by weakening or paralyzing certain muscles or by blocking certain nerves. The effects last about three to twelve months, depending on what you are treating. The most common side effects are pain, swelling, or bruising at the injection site. You could also have flu-like symptoms, headache, and upset stomach. Injections in the face may also cause temporary drooping eyelids. You should not use Botox if you are pregnant or breastfeeding.

Chronic Pain

What is chronic pain?

Pain is a signal from your nervous system that something may be wrong. It is an unpleasant feeling, such as a prick, tingle, sting, burn, or ache. Pain may be sharp or dull. You may feel pain in one area of your body or all over. Each person feels pain differently, even if the reason for the pain is the same.

Pain might be acute or chronic. The type of pain is based on how long and how often you have pain. Acute pain starts suddenly and goes away when the cause is treated or healed. This pain lets you know that you may be injured or have a problem you need to take care of. Chronic pain lasts longer than three months or the time in which you should have healed.

If you have chronic pain, it can occur most days or every day and may last for weeks, months, or even years. It can affect all aspects of daily life, including your mood and relationships. Treatment may not get rid of chronic pain, but it can help with your symptoms.

What causes chronic pain?

Sometimes, acute pain can become chronic pain. The original cause may have been an injury or infection, or you may have an ongoing cause of pain, such as arthritis or cancer. In some cases, there is no clear cause. Environmental factors and psychological factors such as mood and stress can make chronic pain worse.

What are the symptoms of chronic pain?

Since people feel pain in different ways, two people could have the same issue, but each may have different symptoms. Chronic pain can occur anywhere in your body and may cause other symptoms such as fatigue, mood changes, or difficulty sleeping. If you have depression or stress, it may make chronic pain worse.

Who is more likely to get chronic pain?

Many older adults have chronic pain. Women also report having more chronic pain than men, and they are at a greater risk for many pain conditions. Some people have two or more chronic pain conditions. You may be more likely to have chronic pain if you have certain medical conditions such as:

How is chronic pain diagnosed?

Chronic pain lasts three months or longer or when pain continues after your body has healed. If the cause of your pain is unknown, your health care provider may:

What are the treatments for chronic pain?

Chronic pain is not always curable, but treatments can help. Treatments may include medicines, including pain relievers. There are also non-drug treatments, such as acupuncture, physical therapy, and sometimes surgery.

Depending on the cause of your pain and your symptoms, your provider may also recommend lifestyle changes which may include suggestions for:

Depression

What is depression?

Depression is more than a feeling of being sad or irritable for a few days. It's a serious mood disorder. As one of the most common mental disorders in the United States, depression can affect how you think, feel, and your everyday life. You may not know why you feel this way, but even basic daily activities such as sleeping, eating, or working may become difficult. Depression often needs long-term treatment but getting help at the earliest sign of a problem can help manage your symptoms.

What are the different types of depression?

The most common types of depression are major depression and persistent depressive disorder.

Other types of depression can include:

What causes depression?

There are a variety of things that may cause depression, including genetic, biological, environmental, and psychological factors. Depression can happen at any age and can affect anyone, but it's more common in women. This is often due to the physical and hormonal changes that women have during menstruation, pregnancy, the postpartum period, and menopause. Other mental disorders or chronic medical conditions such as diabetes, cancer, or heart disease may occur with depression. This may make the chronic condition or depression worse.

In some cases, there is no clear cause for depression.

Who is at risk of depression?

You may be at a higher risk of depression if you have a close relative who has it or another mental health disorder. Going through trauma or stressful life events may raise your risk even more.

What are the symptoms of depression?

Depression doesn't look the same on everyone. The type and number of symptoms of depression can vary and don't always appear like sadness. Depression may affect you differently based on your:

Symptoms of depression are ongoing and affect your day-to-day life. They can include:

How is depression diagnosed?

If you think you have depression, talk to your health care provider or a mental health provider. To be diagnosed with depression, your provider may use many tools:

What are the treatments for depression?

Depression may need long-term treatment. Most treatments include medicines and/or psychotherapy (talk therapy):

Can depression be prevented?

Most cases of depression can't be prevented, but healthy lifestyle changes can have long-term benefits for your mental health. These can include:

If you, or someone you love is depressed, see your provider or a mental health provider. It's important to get treatment at the earliest sign of a problem.

If you or someone you know has thoughts of hurting themselves or attempting suicide, get help right away. If it is an emergency, dial 911.

NIH: National Institute of Mental Health

Eye Diseases

What diseases can affect the eye?

Even if your eyes feel healthy, you could have a problem and not know it. That's why regular eye exams are so important. Refractive errors are the most common type of vision problem that makes it hard to see clearly. But some eye conditions or diseases don't have any symptoms and can lead to a permanent loss of vision.

Some common eye diseases and conditions include:

What are the symptoms of eye diseases?

Some eye conditions and diseases do not always have symptoms. Early detection through a comprehensive dilated eye exam could help your eye care provider detect diseases in the early stages. Proper treatment could help slow or prevent vision loss.

Get regular eye exams and call your eye care professional right away if you notice any of these symptoms:

Who is more likely to develop eye diseases?

Getting older increases your risk of some eye diseases. Other things that may put you at a higher risk of some eye diseases can include if you:

What are the treatments for eye diseases?

Treatment may depend on the eye condition or disease but can include:

Depending on your eye condition or disease, treatment may slow vision loss but may not restore vision. Talk to your provider about what treatment is best for you.

Can eye diseases be prevented?

Your best defense is to have regular checkups. Be sure to tell your provider if any eye diseases run in your family.

You can also help take care of your vision by making lifestyle changes to lower your risk of health conditions that can cause vision problems. This could include by:

NIH: National Eye Institute

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