Allergic reactions are sensitivities to substances called allergens that come into contact with the skin, nose, eyes, respiratory tract, and gastrointestinal tract. They can be breathe
An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergiesoften are sensitive to more than one thing. Substances that
Dementia is a loss of brain function that occurs with certain diseases. Alzheimer disease is one form of dementia. It affects memory, thinking, and behavior.
The exact cause of Alz
Amebiasis is an infection of the intestines caused by the parasite Entamoeba histolytica.
Entamoeba histolytica can live in the large intestine (colon) without causing dama
Amnesia refers to the loss of memories, such as facts, information and experiences. Though having no sense of who you are is a common plot device in movies and television, real-life amnesia generally
Anabolic Steroids (Anabolic-androgenic steroids, Performance-enhancing drugs)
Anabolic steroids are man-made substances related to male sex hormones. Doctors use anabolic steroids to treat some hormone problems in men, delayed puberty, and muscle loss from some d
WHAT IS AN ANAL ABSCESS OR FISTULA?
An anal abscess is an infected cavity filled with pus found near the anus or rectum. Ninety percent of abscesses are the result of an acute infection in the
Anaphylaxis is a life-threatening type of allergic reaction.
Anaphylaxis is a severe, whole-body allergic
What is anemia?
Anemia is a condition that affects your red blood cells. Your red blood cells carry oxygen from your lungs to the rest of your body. Hemoglobin is the protein in red blood cells that