Cytomegalovirus (CMV) infection Cytomegalovirus infection (See: Cytomegalovirus (CMV) infection) Overview Cytomegalovirus (CMV) is a common virus that can infect almost anyone. Once infected, your body

Cystitis Cystitis, interstitial (See: Interstitial cystitis) Cysts, epidermoid (See: Epidermoid cysts) Cysts, sebaceous (See: Epidermoid cysts) Overview Cystitis (sis-TIE-tis) is the medical term for inflammation

Cystic fibrosis Overview Cystic fibrosis is an inherited disorder that causes severe damage to the lungs, digestive system and other organs in the body. Cystic fibrosis affects the cells that produce mucus,

Cyclothymia (cyclothymic disorder) Cyclothymic disorder (See: Cyclothymia (cyclothymic disorder)) Cyst, Bartholin’s (See: Bartholin’s cyst) Cyst, ganglion (See: Ganglion cyst) Cyst, kidney

Cyclospora infection Overview Cyclospora infection (cyclosporiasis) causes watery, and sometimes explosive, diarrhea. The one-celled parasite that causes cyclospora infection can enter your body when you

Cyclic vomiting syndrome Overview Cyclic vomiting syndrome is characterized by episodes of severe vomiting that have no apparent cause. Episodes can last for hours or days and alternate with symptom-free

Cutaneous T-cell lymphoma Overview Cutaneous T-cell lymphoma (CTCL) is a rare type of cancer that begins in white blood cells called T cells (T lymphocytes). These cells normally help your body’s

Nonmelanoma skin cancer Cutaneous B-cell lymphoma is a rare type of cancer that begins in the white blood cells and attacks the skin. Cutaneous B-cell lymphoma begins in the B cells — one type of disease-fighting

Cushing syndrome Overview Cushing syndrome occurs when your body is exposed to high levels of the hormone cortisol for a long time. Cushing syndrome, sometimes called hypercortisolism, may be caused by

Cryptosporidium infection CTCL (See: Cutaneous T-cell lymphoma) Curvature of the penis (See: Peyronie’s disease) Curvature of the spine (See: Scoliosis) Overview Cryptosporidium infection (cryptosporidiosis)

Cryoglobulinemia Cryptorchidism (See: Undescended testicle) Cryptosporidiosis (See: Cryptosporidium infection) Overview Cryoglobulins are abnormal proteins in the blood. If you have cryoglobulinemia (kry-o-glob-u-lih-NEE-me-uh),

Croup Overview Croup refers to an infection of the upper airway, which obstructs breathing and causes a characteristic barking cough. The cough and other signs and symptoms of croup are the result of swelling

Crohn’s disease Overview Follow the discussion on the latest advances in treating Crohn’s disease and ulcerative colitis. Crohn’s disease is an inflammatory bowel disease (IBD). It causes

Creutzfeldt-Jakob disease Crib death (See: Sudden infant death syndrome (SIDS)) Overview Creutzfeldt-Jakob (KROITS-felt YAH-kobe) disease is a degenerative brain disorder that leads to dementia and, ultimately,

Craniosynostosis Overview Craniosynostosis (kray-nee-o-sin-os-TOE-sis) is a birth defect in which one or more of the fibrous joints between the bones of your baby’s skull (cranial sutures) close