An antigen is a substance (such as part of a virus or bacteria) that triggers the immune system to produce cells (antibodies) that attack and try to destroy the antigen. The body usually produces one specific type of antibody for each antigen. Sometimes the body mistakenly recognizes its own tissue as an antigen or...
For a giardia antigen test, a stool sample or fluid from the upper part of the intestines (duodenal fluid) is tested in the lab for the presence of antigens from Giardia lamblia. This test is often done at the same time as a stool analysis.
Antihemophilic and von Willebrand factors are naturally occurring proteins in the blood that help the blood to clot. A lack of antihemophilic factor VIII is the cause of hemophilia A. A lack of von Willebrand factor is the cause of von Willebrand disease. This medicine works by temporarily raising levels of factor VIII...
Antihemophilic factor is a naturally occurring protein in the blood that helps blood to clot. A lack of antihemophilic factor VIII is the cause of hemophilia A. Human antihemophilic factor works by temporarily raising levels of factor VIII in the blood to aid in clotting. Human antihemophilic factor is used to treat or...
Antihemophilic factor (clotting factor) is a naturally occurring protein in the blood. People with hemophilia A have a deficiency in clotting factor VIII. Recombinant antihemophilic factor replaces clotting factor VIII in the blood. Recombinant antihemophilic factor is used to treat or prevent bleeding episodes in...
Antihistamines are medicines that may relieve allergy symptoms and itching. Many are available without a prescription. Nondrowsy antihistamines include fexofenadine (Allegra) and loratadine (Claritin). Antihistamines like diphenhydramine (Benadryl) and chlorpheniramine (Chlor-Trimeton) can make you feel sleepy and cause...
Oral antihistamines are available without a prescription. Common types such as diphenhydramine (for example, Benadryl), chlorpheniramine (for example, Chlor-Trimeton), and loratadine (for example, Claritin) are used to treat allergy symptoms and itching. Look for generic or store brands, which often cost less than name...
Certain antihistamines such as dimenhydrinate or doxylamine, taken as your doctor advises, may relieve morning sickness. Doxylamine (Unisom SleepTabs) is available over-the-counter. If one of these antihistamines alone does not relieve your morning sickness, you can try taking it with vitamin B6. Talk to your doctor...
NOTE: The information in this summary is no longer being updated and is provided for reference purposes only. This cancer information summary provides an overview of the use of antineoplastons as treatments for people with cancer. The summary includes a brief history of the development of antineoplastons; a review of...
NOTE: The information in this summary is no longer being updated and is provided for reference purposes only. Antineoplastons are chemical compounds found in urine and blood. Antineoplastons are made in a laboratory when used for research. (See Question 1.) No randomized, controlled trials of antineoplastons have been...
An antinuclear antibody (ANA) test measures the amount and pattern of antibodies in your blood that work against your own body (autoimmune reaction). The body's immune system normally attacks and destroys foreign substances such as bacteria and viruses. But in disorders known as autoimmune diseases, the immune system...
Antioxidants are natural chemicals that protect the body from damage caused by harmful molecules called free radicals. Many experts believe that this damage is a factor in the development of cancer and other conditions. You are exposed to free radicals: Through by-products of normal processes that take place in your...
Antioxidants protect the body from damage caused by harmful molecules called oxygen free radicals. Some antioxidants are vitamins (such as beta-carotene and vitamins E and C) that are naturally found in many fruits and vegetables or are available as supplements. Oxygen free radicals are normal by-products of cell...
Interactions with Supplements, Foods, & Other Compounds Antioxidants include many different nutrients, each of which has the potential to interact with drugs. Look up the unique interactions for each and discuss the potential benefits and risks of your current medications with your doctor or pharmacist before adding...
Antioxidants and Free Radicals How Much Is Usually Taken by Athletes? Most research has demonstrated that strenuous exercise increases production of harmful substances called free radicals, which can damage muscle tissue and result in inflammation and muscle soreness. Exercising in cities or smoggy areas also increases...
Antiphospholipid syndrome is a rare autoimmune disease that has been closely linked to some cases of recurrent miscarriage. This syndrome increases blood clotting. It can cause dangerous blood clots (thrombosis) and problems with blood flow. For some women, the only sign of this condition is an early miscarriage. Or...
Make sure you know about each of the medicines you take. This includes why you take it, how to take it, what you can expect while you're taking it, and any warnings about the medicine. The information provided here is general. So be sure to read the information that came with your medicine. If you have any questions or...
Make sure you know about each of the medicines you take. This includes why you take it, how to take it, what you can expect while you're taking it, and any warnings about the medicine. The information provided here is general. So be sure to read the information that came with your medicine. If you have any questions or...
Make sure you know about each of the medicines you take. This includes why you take it, how to take it, what you can expect while you're taking it, and any warnings about the medicine. The information provided here is general. So be sure to read the information that came with your medicine. If you have any questions or...
Antiretroviral therapy, or ART, is the use of a combination of medicines to slow the rate at which HIV makes copies of itself (replicates) in the body.
An antisperm antibody test looks for special proteins ( antibodies) that fight against sperm in blood, vaginal fluids, or semen. The test uses a sample of sperm and adds a substance that binds only to affected sperm. Semen can cause an immune system response. The antibodies can damage or kill sperm. If a high number of...
Thyroid antibody tests measure the levels of antibodies that can destroy thyroid tissue or make the cells produce thyroid hormones. They are blood tests. Antibodies that destroy thyroid tissue can lead to hypothyroidism (underactive thyroid). Antibodies that make the cells produce thyroid hormone can lead to...
Crotalidae antivenin is an anti-venom used to treat a person who has been bitten by a poisonous snake such as a rattlesnake or Water Moccasin. Antivenin (Crotalidae) polyvalent may also be used for purposes not listed in this medication guide.
Centruroides scorpion antivenom is used to treat a person who has been stung by a scorpion. Antivenom (Centruroides scorpion) may also be used for purposes not listed in this medication guide.
Briefly discusses physical and emotional symptoms of anxiety. Covers anxiety disorders, panic attacks, and phobias. Offers interactive tool to help decide when to seek care. Offers tips to help with anxiety.
Anxiety is an uncomfortable feeling of fear, uneasiness, or concern that something bad may happen. Anxiety can cause physical symptoms such as trembling, shaking, muscle aches, restlessness, insomnia, rapid heartbeat, sweating, and clammy hands. If anxiety interferes with your daily activities, you may need treatment...
Take control of anxiety and get on with life. Some anxiety is normal—but it shouldn’t interfere with your ability to function. According to research or other evidence, the following self-care steps may be helpful. Aim for better nutrition with a multivitamin Taking one a day may help reduce anxiety and feelings of...
Primary Remedies Aconitum napellus A panic attack that comes on suddenly with very strong fear (even fear of death) may indicate this remedy. A state of immense anxiety may be accompanied by strong palpitations, shortness of breath, and flushing of the face. Sometimes a shaking experience will be the underlying cause...
Anxiety disorders are a type of mental illness. Someone who has an anxiety disorder has severe anxiety that interferes with his or her life. Anxiety is an uncomfortable feeling of fear, uneasiness, or concern that something bad is about to happen. Anxiety disorders include: Generalized anxiety disorder. This involves...
Practice recognizing and replacing thoughts that cause anxiety.
