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Sarcoidosis Learning Center

There may be no symptoms. When symptoms occur, they can involve almost any part or organ system in your body.
Source:ADAM
Date:May 21, 2009
The cause of sarcoidosis is not known. Because the granulomas are primarily made up of cells from the immune system (macrophages and lymphocytes), an immune connection is strongly suspected. One of the theories which has been put forth suggests th...
Source:Gale Encyclopedia of Medicine
Coughing is an important way to keep your throat and airways clear. However, excessive coughing may mean you have an underlying disease or disorder. Some coughs are dry, while others are considered productive. A productive cough is one that brings...
Source:ADAM
Date:November 15, 2009
A cough is a forceful release of air from the lungs that can be heard. Coughing protects the respiratory system by clearing it of irritants and secretions.
Source:Gale Encyclopedia of Medicine
A cough is a forceful release of air from the lungs that can be heard. Coughing protects the respiratory system by clearing it of irritants and secretions.
Source:Gale Encyclopedia of Children's Health
Anemia is a condition in which the body does not have enough healthy red blood cells. Red blood cells provide oxygen to body tissues. Hemoglobin is the oxygen-carrying protein inside red blood cells. It gives red blood cells their red color. Peopl...
Source:ADAM
Date:April 5, 2009
Anemia is a condition characterized by abnormally low levels of healthy red blood cells or hemoglobin.
Source:Gale Encyclopedia of Alternative Medicine
Anemia is a blood disorder characterized by abnormally low levels of healthy red blood cells (RBCs) or reduced hemoglobin (Hgb), the iron-bearing protein in red blood cells that delivers oxygen to tissues throughout the body. Reduced blood cell vo...
Source:Gale Encyclopedia of Children's Health
Anemia is characterized by an abnormally low number of red blood cells in the circulating blood. It frequently affects patients with cancer. In fact, in many cancer diagnoses such as multiple myeloma and acute leukemia , the presence of anemia may...
Source:Gale Encyclopedia of Cancer
Anemia is a condition characterized by abnormally low levels of healthy red blood cells or hemoglobin (the component of red blood cells that delivers oxygen to tissues throughout the body).
Source:Gale Encyclopedia of Medicine
Anemia is a condition characterized by abnormally low levels of healthy red blood cells or hemoglobin (the component of red blood cells that delivers oxygen to tissues throughout the body).
Source:Gale Encyclopedia of Nursing and Allied Health
Deficiency of red cells, or hemoglobin, in the blood. Anemia is a medical condition in which the quantity of red blood cells falls below an acceptable level. Red blood cells, produced in the bone marrow, contain hemoglobin, the component of blood ...
Source:Gale Encyclopedia of Childhood and Adolescence
Anemia affects more than 30 percent of the world's population, and it is one of the most important worldwide health problems. It has a significant prevalence in both developing and industrialized nations. Causes of anemia include nutritional defic...
Source:Gale Nutrition and Well-Being A to Z
Night sweats can be a side effect of cancer treatment or a symptom of certain cancers. Night sweats are part of a variety of symptoms referred to as vasomotor. Vasomotor symptoms stem from the body's thermoregulatory center, which is affected by c...
Source:Gale Encyclopedia of Cancer
Muscle aches and pains are common and can involve more than one muscle. Muscle pain also can involve ligaments, tendons, and fascia, the soft tissues that connect muscles, bones, and organs. See also: Muscle cramps; Joint pain.
Source:ADAM
Date:May 2, 2009
Breathing difficulty involves a sensation of difficult or uncomfortable breathing or a feeling of not getting enough air. See also: Difficulty breathing - first aid
Source:ADAM
Date:June 12, 2009
Shortness of breath, or dyspnea, is a feeling of difficult or labored breathing that is out of proportion to the patient's level of physical activity. It is a symptom of a variety of different diseases or disorders and may be either acute or chronic.
Source:Gale Encyclopedia of Medicine
Palpitations are heartbeat sensations that feel like your heart is pounding or racing. You may simply have an unpleasant awareness of your own heartbeat, or may feel skipped or stopped beats. The heart's rhythm may be normal or abnormal. Palpitati...
Source:ADAM
Date:May 1, 2008
A sensation in which a person is aware of an irregular, hard, or rapid heartbeat.
Source:Gale Encyclopedia of Medicine
Dry mouth, known medically as xerostomia, is the abnormal reduction of saliva due to medication, disease, or medical therapy.
Source:Gale Encyclopedia of Alternative Medicine
Xerostomia, also known as dry mouth, is marked by a significant reduction in the secretion of saliva. Signs and symptoms of xerostomia include: dryness of the mouth cracked lips, cuts, or cracks at the corners of the mouth taste changes a burning ...
Source:Gale Encyclopedia of Cancer
Dry mouth, known medically as xerostomia, is the abnormal reduction of saliva due to medication, disease, or medical therapy.
Source:Gale Encyclopedia of Medicine
A cough is a forceful release of air from the lungs that can be heard. Coughing protects the respiratory system by clearing it of irritants and secretions.
Source:Gale Encyclopedia of Alternative Medicine
Cough suppressants are medicines that prevent or stop a person from coughing.
Source:Gale Encyclopedia of Children's Health
Lymph nodes are found throughout your body. They are an important part of your immune system. Lymph nodes help your body recognize and fight germs, infections, and other foreign substances. The term "swollen glands" refers to enlargement of one or...
Source:ADAM
Date:April 14, 2009
Joint swelling is the buildup of fluid in the soft tissue surrounding the joint.
Source:ADAM
Date:August 12, 2008
Sleeping difficulty, called insomnia, can involve difficulty falling asleep when you first go to bed at night, waking up too early in the morning, and waking up often during the night.
Source:ADAM
Date:February 6, 2008
Joint pain can affect one or more joints. See also: Arthritis (inflammation of joints; Bursitis; Muscle pain.
Source:ADAM
Date:April 24, 2008
Many people experience feel short of breath during strenuous activity if they are not accustomed to exercise. If you have a sudden onset of difficulty breathing doing a normal routine, it may be a medical emergency.
Source:Healthline
Date:September 30, 2007
Hazy vision, cloudy vision, blurred vision are all problems with seeing clearly. Any change in your normal vision is cause for concern and is a good reason to call a doctor for an examination.
Source:Healthline
Date:September 30, 2007
Electrical impulses causes the heart to pump. Normally the impulse originates in the right upper chamber of the heart, called the right atrium. The electrical
Source:Healthline
Date:September 30, 2007
Pain is a universal human experience. The International Association for the Study of Pain (IASP) defines pain as "an unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage...
Source:Gale Encyclopedia of Neurological Disorders
Pain, medically termed "nociception," is a response to noxious stimuli that is conveyed to the brain by sensory neurons . The discomfort signals actual or impending injury to the body. However, pain is more than a sensation, or the physical awaren...
Source:Gale Encyclopedia of Nursing and Allied Health
Pain is an unpleasant feeling that is conveyed to the brain by sensory neurons. The discomfort signals actual or potential injury to the body. However, pain is more than a sensation, or the physical awareness of pain; it also includes perception, ...
Source:Gale Encyclopedia of Medicine
Pain is an unpleasant feeling that is conveyed to the brain by nerves in the body.
Source:Gale Encyclopedia of Children's Health
Pain is an unpleasant feeling that is conveyed to the brain by sensory neurons. The discomfort signals actual or potential injury to the body. However, pain is more than a sensation, or the physical awareness of pain; it also includes perception, ...
Source:Gale Encyclopedia of Alternative Medicine
Fever is the temporary increase in the body's temperature, in response to some disease or illness. A child has a fever when their temperature is at or above one of these levels: 100.4 F (38 C) measured in the bottom (rectally; 99.5 F(37.5 C) measu...
Source:ADAM
Date:December 1, 2009
A fever is any body temperature elevation over 100.4°F (38°C).
Source:Gale Encyclopedia of Children's Health
Fever is defined as an abnormally high body temperature or a regulated rise to a new set point of body temperature. While a body temperature above 100°F(37.8°C) is considered to be a fever by some clinicians, a significant fever is usually defined...
Source:Gale Encyclopedia of Nursing and Allied Health
A fever is any body temperature elevation over 100°F (37.8°C).
Source:Gale Encyclopedia of Medicine
An elevated body temperature. While the standard for normal body temperature is 98.6°F (37°C), normal body temperatures actually fluctuate within a range of one to two degrees, making it impossible to formulate a precise definition of fever based ...
Source:Gale Encyclopedia of Childhood and Adolescence
Normal body temperature varies somewhat from one individual to another but displays a general range and pattern around the "normal" temperature of 98.6°F. Early morning body temperature may be as low as 97°F, and as high as 99.3°F in the afternoon...
Source:Gale Encyclopedia of Cancer
Hyperthermia is the use of therapeutic heat to treat various cancers on and inside the body.
Source:Gale Encyclopedia of Cancer
Hyperthermia involves raising the body's core temperature as a means of eradicating tumors. The treatment simulates fever . Some therapies actually bring on fever through the introduction of fever-causing organisms, while others raise body tempera...
Source:Gale Encyclopedia of Alternative Medicine
Fatigue is a feeling of weariness, tiredness, or lack of energy.
Source:ADAM
Date:August 3, 2009
Fatigue is physical and/or mental exhaustion that can be triggered by stress , medication, overwork, or mental and physical illness or disease.
Source:Gale Encyclopedia of Alternative Medicine
Fatigue may be defined as a subjective state in which one feels tired or exhausted, and in which the capacity for normal work or activity is reduced. There is, however, no commonly accepted definition of fatigue when it is considered in the contex...
Source:Gale Encyclopedia of Neurological Disorders
Fatigue may be defined as a subjective state in which one feels tired or exhausted, and in which the capacity for normal work or activity is reduced. There is, however, no commonly accepted definition of fatigue when it is considered in the contex...
Source:Gale Encyclopedia of Mental Disorders
Fatigue is physical and/or mental exhaustion that can be triggered by stress , medication, overwork, or mental and physical illness or disease.
Source:Gale Encyclopedia of Medicine
Fatigue is a feeling of exhaustion or loss of strength. The duration of fatigue for a patient with cancer has been found to last from one to two times the length of time between diagnosis and completion of treatment, so it is common for fatigue to...
Source:Gale Encyclopedia of Cancer
Rashes involve changes in the color or texture of your skin.
Source:ADAM
Date:August 8, 2009
The popular term for a group of spots or red, inflamed skin that is usually a symptom of an underlying condition or disorder. Often temporary, a rash is only rarely a sign of a serious problem.
Source:Gale Encyclopedia of Medicine
The popular term for a group of spots or red, inflamed skin that is usually a symptom of an underlying condition or disorder. Often temporary, a rash is only rarely a sign of a serious problem.
Source:Gale Encyclopedia of Children's Health
Rash is a popular term for a group of spots or an area of red, inflamed skin. A rash is usually a symptom of an underlying condition or disorder. Often only temporary, a rash is rarely a sign of a serious problem.
Source:Gale Encyclopedia of Alternative Medicine
A headache is pain or discomfort in the head, scalp, or neck. Serious causes of headaches are extremely rare. Most people with headaches can feel much better by making lifestyle changes, learning ways to relax, and occasionally by taking medicatio...
Source:ADAM
Date:October 27, 2009
A headache is a pain in the head and neck region that may be either a disorder in its own right or a symptom HEADACHE THERAPIES Description Type Acupressure Press pointer fingers beneath cheekbones and parallel to pupils (Stomach 3) for one minute...
Source:Gale Encyclopedia of Alternative Medicine
A headache involves pain in the head which can arise from many disorders or may be a disorder in and of itself.
Source:Gale Encyclopedia of Medicine
A headache involves pain in the head that can arise from many disorders or may be a disorder in and of itself.
Source:Gale Encyclopedia of Children's Health
Headache is a pain in the head and neck region that may be either a disorder in its own right or a symptom of an underlying medical condition or disease. The medical term for headache is cephalalgia. Headaches are one of the most common and univer...
Source:Gale Encyclopedia of Neurological Disorders
Being tired is the familiar aftermath of physical exertion, prolonged labor or lack of sleep. When does being tired become a symptom of a condition? Fatigue, malaise, lassitude, exhaustion are all subtle variations of the same subjective feelings of not having enough energy to meet the demands of one's life.
Source:Healthline
Date:September 30, 2007
Weakness is a reduction in the strength of one or more muscles.
Source:ADAM
Date:August 8, 2009
Abdominal pain is pain that you feel anywhere between your chest and groin. This is often referred to as the stomach region or belly.
Source:ADAM
Date:October 7, 2009
Blindness is a lack of vision. It may also refer to a loss of vision that cannot be corrected with glasses or contact lenses. Partial blindness means you have very limited vision; Complete blindness means you cannot see anything and do not see lig...
Source:ADAM
Date:August 22, 2008
Paralysis is defined as complete loss of strength in an affected limb or muscle group.
Source:Gale Encyclopedia of Medicine
Paralysis is defined as complete loss of strength in an affected limb or muscle group.
Source:Gale Encyclopedia of Nursing and Allied Health
Itching is a tingling or irritation of the skin that makes you want to scratch the affected area.
Source:ADAM
Date:August 22, 2008
Itching is an intense, distracting irritation or tickling sensation that may be felt all over the skin's surface or confined to just one area. The medical term for itching is pruritus.
Source:Gale Encyclopedia of Alternative Medicine
Itching is an intense, distracting irritation or tickling sensation that may be felt all over the skin's surface or confined to just one area. The medical term for itching is pruritus.
Source:Gale Encyclopedia of Children's Health
Itching, also called pruritus, is an unpleasant sensation of the skin that causes a person to scratch or rub the area to find relief. Itching can be confined to one spot (localized) or over the whole body (generalized). Severe scratching can injur...
Source:Gale Encyclopedia of Cancer
Itching is an intense, distracting irritation or tickling sensation that may be felt all over the skin's surface, or confined to just one area. The medical term for itching is "pruritus."
Source:Gale Encyclopedia of Medicine
Numbness and tingling are abnormal sensations that can occur anywhere in your body, but are often felt in your fingers, hands, feet, arms, or legs.
Source:ADAM
Date:April 21, 2009
Numbness and tingling are decreased or abnormal sensations caused by altered sensory nerve function.
Source:Gale Encyclopedia of Medicine
Confusion is the inability to think with your usual speed or clarity, including feeling disoriented and having difficulty paying attention, remembering, and making decisions.
Source:ADAM
Date:February 13, 2008
Malaise is a generalized feeling of discomfort, illness, or lack of well-being.
Source:ADAM
Date:February 22, 2009
Wheezing is a high-pitched whistling sound during breathing. It occurs when air flows through narrowed breathing tubes.
Source:ADAM
Date:May 12, 2009
Wheezing is a high-pitched whistling sound associated with labored breathing.
Source:Gale Encyclopedia of Medicine
Wheezing is a high-pitched whistling sound associated with labored breathing.
Source:Gale Encyclopedia of Alternative Medicine
Color blindness is the inability to see certain colors in the usual way.
Source:ADAM
Date:April 13, 2009
Color blindness is an abnormal condition characterized by the inability to clearly distinguish different colors of the spectrum. The difficulties can be mild to severe. It is a misleading term because people with color blindness are not blind. Rat...
Source:Gale Encyclopedia of Genetic Disorders Part II
Color blindness is an abnormal condition characterized by the inability to clearly distinguish different colors of the spectrum. The difficulties can be mild to severe. It is a misleading term because people with color blindness are not blind. Rat...
Source:Gale Encyclopedia of Medicine
Color blindness is an abnormal condition characterized by the inability to clearly distinguish different colors of the spectrum. The difficulties can range from mild to severe. It is a misleading term because people with color blindness are not bl...
Source:Gale Encyclopedia of Children's Health
Color blindness is an abnormal condition characterized by the inability to clearly distinguish different colors of the spectrum. The difficulties can be mild to severe. It is a misleading term because people with color blindness are not blind. Rat...
Source:Gale Encyclopedia of Genetic Disorders Part I
The term color blindness describes a deficiency in discriminating various colors. It is a misnomer because most color-blind people do, in fact, see colors. The deficiency is a lack of perceptual sensitivity to certain colors. A rare few may not se...
Source:Gale Encyclopedia of Nursing and Allied Health
Anorexia is characterized by a loss of appetite or lack of desire to eat.
Source:Gale Encyclopedia of Cancer
Visual disturbances are abnormalities of sight. Visual disturbances associated with neurological disorders often include double vision (diplopia), moving or blurred vision due to nystagmus (involuntary rapid movements of the eyes), reduced visual ...
Source:Gale Encyclopedia of Neurological Disorders
Nasal congestion refers to a stuffy nose.
Source:ADAM
Date:November 2, 2009
The floating specks you sometimes see in front of your eyes are not on the surface of your eyes, but inside them. These floaters are bits of cellular debris that come and go without treatment. To some people, these "floaters" look like spots. To o...
Source:ADAM
Date:October 27, 2009
Facial swelling is the build-up of fluid in the tissues of the face. Swelling may also affect the neck and upper arms.
Source:ADAM
Date:February 23, 2009
Excessive volume of urination means that you release abnormally large amounts of urine each day. The medical term for this condition is polyuria.
Source:ADAM
Date:September 30, 2009
Red eyes are caused by enlarged, dilated blood vessels, leading to the appearance of redness on the surface of the eye.
Source:ADAM
Date:November 10, 2008
Total blindness is the inability to tell light from dark, or the total inability to see. Visual impairment or low vision is a severe reduction in vision that can't be corrected with standard glasses or contact lenses and reduces a person's ability...
Source:Gale Encyclopedia of Medicine
Paleness is an abnormal loss of color from normal skin or mucous membranes.
Source:ADAM
Date:April 13, 2009
Moist skin is an indication that the body is sweating (perspiring). Perspiration is the release of liquid from the sweat glands of the body, a normal body function to help the body stay cool.
Source:Healthline
Date:September 30, 2007
Eye burning with discharge is burning, itching, or drainage from the eye of any substance other than tears.
Source:ADAM
Date:October 31, 2009
Photophobia is eye discomfort in bright light.
Source:ADAM
Date:April 13, 2009
When the airways are blocked or narrowed by inflammation, secretions, a foreign object, mass, swelling or spasm, the breath sounds become noisy. If the high pitched breath sounds are a sign of difficulty breathing then immediate medial attention is required..
Source:Healthline
Date:November 30, 2007
Breath sounds are the noises produced by the structures of the lungs during breathing. See also: Wheezing
Source:ADAM
Date:November 2, 2009
Sometimes a person feels hot to touch due to illness or environmental situation that causes elevated core temperature. A compounding factor can be dehydration (lack of fluids.
Source:Healthline
Coma, from the Greek word "koma," meaning deep sleep, is a state of extreme unresponsiveness, in which an individual exhibits no voluntary movement or behavior. Furthermore, in a deep coma, even painful stimuli (actions which, when performed on a ...
Source:Gale Encyclopedia of Medicine
Coma, from the Greek word koma , meaning deep sleep, is a state of extreme unresponsiveness, in which an individual exhibits no voluntary movement or behavior. Furthermore, in a deep coma, even painful stimuli (actions which, when performed on a h...
Source:Gale Encyclopedia of Nursing and Allied Health
Chest pain is discomfort or pain that you feel anywhere along the front of your body between your neck and upper abdomen.
Source:ADAM
Date:June 1, 2009
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