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Anxiety—Worry or tension in response to real or imagined stress, danger, or dreaded situations. Physical reactions, such as fast pulse, sweating, trembling, fatigue, and weakness may accompany anxiety.
Asthma—A disease in which the air passages of the lungs become inflamed and narrowed.
Bronchitis—Inflammation of the air passages of the lungs.
Central nervous system—The brain, spinal cord and the nerves throughout the body.
Chronic—A word used to describe a long-lasting condition. Chronic conditions often develop gradually and involve slow changes.
Emphysema—An irreversible lung disease in which breathing becomes increasingly difficult.
Epilepsy—A brain disorder with symptoms that include seizures.
Glaucoma—A condition in which pressure in the eye is abnormally high. If not treated, glaucoma may lead to blindness.
Myasthenia gravis—A chronic disease with symptoms that include muscle weakness and sometimes paralysis.
Panic disorder—A disorder in which people have sudden and intense attacks of anxiety in certain situations. Symptoms such as shortness of breath, sweating, dizziness, chest pain, and extreme fear often accompany the attacks.
Phobia—An intense, abnormal, or illogical fear of something specific, such as heights or open spaces.
Porphyria—A disorder in which porphyrins build up in the blood and urine.
Porphyrin—A type of pigment found in living things.
Seizure—A sudden attack, spasm, or convulsion.
Sleep apnea—A condition in which a person temporarily stops breathing during sleep.
Withdrawal symptoms—A group of physical or mental symptoms that may occur when a person suddenly stops using a drug to which he or she has become dependent.
Author Info: Nancy Ross-Flanigan, The Gale Group Inc., Gale, Detroit, Gale Encyclopedia of Medicine, 2002
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