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Coronary Artery Disease
Coronary artery disease is a type of heart disease in which plaque builds up inside the coronary arteries, the blood vessels that…
Coronary Artery Dissection
Coronary artery dissection occurs when blood enters a split within the wall of a coronary artery, creating a buildup that can narrow…
Coronary Artery Occlusion
Coronary artery occlusion is a partial or complete blockage in an artery that supplies blood to the heart muscle. It is commonly…
Coronary Microvascular Disease
Coronary microvascular disease is a condition affecting the tiny blood vessels that supply the heart muscle. When these vessels do not work…
Cortisol Blood Test
A cortisol blood test measures the amount of cortisol in a blood sample. Cortisol is a hormone made by the adrenal glands…
Cough
A cough is a forceful reflex that helps clear your throat and airways of mucus, irritants, or foreign material. It may be…
Coughing Up Blood
Coughing up blood, also called haemoptysis, means bringing up blood or blood-streaked mucus when you cough. It may appear as a few…
Coughing Up Mucus
Coughing up mucus means bringing phlegm, or thick mucus, from the airways into the throat and mouth. The nose, throat and lungs…
Cracked Tooth Syndrome
Cracked tooth syndrome is a crack in a tooth that may cause sharp pain or sensitivity, especially when chewing or when the…
Cranial Palsy
Cranial palsy is weakness or loss of function in one or more cranial nerves, which are nerves that connect the brain with…
Craniosynostosis
Craniosynostosis is a condition present at birth in which one or more skull sutures, the flexible joints between an infant’s skull bones,…
Creatinine Blood Test
Creatinine is a waste product produced by normal muscle activity. A creatinine blood test measures the concentration of creatinine in your blood,…
Crohn Disease
Crohn disease is a chronic inflammatory bowel disease that causes ongoing or recurring inflammation in the digestive tract. It can affect any…
Croup
Croup is usually a viral infection that causes swelling around the voice box (larynx) and windpipe (trachea). It most often affects young…
Crp Blood Test
A CRP blood test measures the amount of C-reactive protein in a blood sample. C-reactive protein is produced by the liver and…
Cruciate Surgery
Cruciate surgery is an operation used to stabilize a dog's knee after a tear of the cranial cruciate ligament (CCL). Although people…
Cryptococcosis
Cryptococcosis is an infection caused by fungi in the Cryptococcus group, usually acquired by inhaling fungal cells or spores from the environment.…
Cryptosporidiosis
Cryptosporidiosis is an intestinal infection caused by microscopic parasites called Cryptosporidium. The parasites can affect the lining of the intestine and commonly…
Cushing Syndrome
Cushing syndrome occurs when the body is exposed to too much cortisol for a long time. It can result from taking corticosteroid…
Cutaneous Candidiasis
Cutaneous candidiasis is a candidiasis skin yeast infection that happens when Candida yeast grows too much on the skin. It commonly develops…
Cutaneous Lupus Erythematosus
Cutaneous lupus erythematosus, also called cutaneous lupus, is an autoimmune condition in which the immune system mistakenly causes inflammation in the skin.…
Cystic Fibrosis
Cystic fibrosis is a genetic disorder caused by changes in the CFTR gene. These changes make mucus unusually thick and sticky, mainly…
Cystinuria
Cystinuria is an inherited disorder in which too much of the amino acid cystine passes into the urine. Because cystine does not…
Dark Circles Under Eyes
Dark circles under eyes are areas beneath the eyes that look darker than the surrounding skin. They are usually a cosmetic appearance…
