Featured Article: Chickenpox
Chickenpox is a highly contagious viral disease causing hundreds of itchy, fluid-filled blisters. Learn about chickenpox causes, symptoms, tests, treatment and prevention. See more »
a-c library
Diseases and Medical Conditions A - C provides down-to-earth, comprehensive definitions of hundreds of ailments and illnesses beginning with the letters A-C. Each listing identifies causes, incidence and risk factors, notes symptoms, outlines tests and discusses treatments and support groups where applicable.
Aseptic Meningitis
Aseptic meningitis is when headache, fever and brain inflammation are not caused by bacteria. Learn about aseptic meningitis causes, symptoms, tests, treatment and prevention.
See more »Aseptic Necrosis
Aseptic necrosis occurs is when a disruption of the blood supply to a bone causes bone death or collapse. Learn about aseptic necrosis causes, symptoms, tests, treatment and prevention.
See more »Asherman Syndrome
Asherman Syndrome information from HowStuffWorks. Learn about causes, symptoms and treatments of Asherman Syndrome.
See more »Asperger Syndrome
Asperger syndrome is a condition similar to autism and is marked by social ineptitude and clumsiness. Learn about Asperger syndrome causes, symptoms, tests, treatment and prevention.
See more »Aspergillosis
Aspergillosis refers to the 3 illnesses caused by the Aspergillus fungus. Learn about aspergillosis types, causes, symptoms, tests, treatment and prevention.
See more »Aspiration Pneumonia
Aspiration pneumonia is lung and bronchial tube inflammation from inhaling foreign material into the lungs. Learn about aspiration pneumonia causes, symptoms, tests, treatment and prevention.
See more »Asthma
Asthma is a respiratory inflammatory disorder that causes periodic wheezing, shortness of breath or coughing. Learn about asthma causes, symptoms, tests, treatment and prevention.
See more »Asthma And Allergy - Resources
Asthma and allergy resources. Asthma and allergy support, information and contacts.
See more »Astigmatism
Astigmatism is when an asymmetrically curved cornea causes out-of-focus vision. Learn about astigmatism causes, symptoms, tests, treatment and prevention.
See more »Asymptomatic Bacteriuria
Asymptomatic bacteriuria is a bacterial infection of the urinary tract that occurs without symptoms. Learn about asymptomatic bacteriuria causes, tests, treatment and prevention.
See more »Asymptomatic HIV Infection
Asymptomatic HIV infection is a phase of chronic HIV infection where there are no symptoms of HIV infection. Learn about asymptomatic HIV infection causes, tests, treatment and prevention.
See more »Ataxia-telangiectasia
Ataxia-telangiectasia information from HowStuffWorks. Learn about causes, symptoms and treatments of Ataxia-telangiectasia.
See more »Atelectasis
Atelectasis is the partial or full collapse of a lung from air passage blockage or very shallow breathing. Learn about atelectasis causes, symptoms, tests, treatment and prevention.
See more »Atheroembolic Renal Disease
Atheroembolic renal disease (AERD) is an inflammatory reaction in the small blood vessels of the kidneys causing organ damage. Learn about AERD causes, symptoms, tests, treatment and prevention.
See more »Atherosclerosis
Atherosclerosis is a condition in which the buildup of fatty materials in an artery may lead to blockage. Learn about atherosclerosis causes, symptoms, tests, treatment and prevention.
See more »Athlete's Foot
Athlete’s foot is a fungal infection called tinea that may come back after treatment. Learn about athlete’s foot causes, symptoms, tests, treatment and prevention.
See more »Atrial Fibrillation/flutter
Atrial fibrillation/flutter is an arrhythmia caused by abnormal functioning of the heart’s electrical conduction system. Learn about atrial fibrillation/flutter causes, symptoms, tests, treatment and prevention.
See more »Atrial Myxoma
Atrial Myxoma information from HowStuffWorks. Learn about causes, symptoms and treatments of Atrial Myxoma.
See more »Atrial Septal Defect
Atrial septal defect is an abnormality of the atria where the wall between the right and left atria does not close. Learn about atrial septal defect causes, symptoms, tests, treatment and prevention.
See more »Atrophic Vaginitis
Atrophic vaginitis is a vaginal inflammation when a lack of estrogen causes vaginal wall thinning and shrinking. Learn about atrophic vaginitis causes, symptoms, tests, treatment and prevention.
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