Coccidioidomycosis is a lung infection caused by a fungus called Coccidioides. This fungus lives in dry, dusty soil. When the soil is disturbed, tiny fungal ...

Cutaneomeningospinal angiomatosis is another name for Cobb syndrome. It is a very rare condition where a person has abnormal blood vessels (angiomas or ...

Coats plus syndrome is a very rare, inherited, multi-system disease where tiny blood vessels (especially in the retina of the eye and the brain) are abnormal ...

Narrowing of the aorta usually means a condition called coarctation of the aorta. In this problem, a short part of the main body artery (the aorta) becomes ...

Coarctation of the aorta is a birth heart problem where a short part of the main body artery (the aorta) is too narrow, like a tight ring on a pipe. This ...

Capillary malformation of the lower lip is a birthmark made from many tiny blood vessels (capillaries) just under the skin of the lower lip. Doctors often call ...

Chronic thromboembolic pulmonary hypertension (CTEPH) is a long-term form of high blood pressure in the lung arteries that develops when old blood clots do not ...

Chronic respiratory distress with surfactant metabolism deficiency is a rare lung disease that mainly affects babies and children. In this disease, the lungs ...

Singultus is the medical word for hiccups. It means short, sudden, jerky breaths that you cannot control. These happen because the main breathing muscle (the ...

Berylliosis is a long-term lung disease caused by breathing in a metal called beryllium at work or in the environment. In berylliosis, the immune system ...

Intracranial hemorrhage in brain cerebrovascular malformations means that an abnormal blood vessel in the brain has leaked or burst and blood has collected ...

Congenital cerebral arteriovenous malformation (AVM) is a blood vessel problem that is present from birth. It is a tangled knot of arteries and veins inside ...

An arteriovenous malformation (AVM) of the brain is an abnormal “tangle” of blood vessels where arteries connect directly to veins without the normal tiny ...

Cerebral arteriovenous malformation (often called a brain AVM) is an abnormal tangle of blood vessels in the brain where arteries connect directly to veins ...

Congenital Central Alveolar Hypoventilation Syndrome (often shortened to CCHS) is a rare condition where a person’s brain and autonomic nervous system do not ...

Central congenital hypoventilation syndrome (CCHS) is a rare condition present from birth (or sometimes showing later) where the brain’s automatic breathing ...

Central hypoventilation syndrome means the brain does not send a strong enough “breathe” signal, especially during sleep. Because of this, a person breathes ...

Areolar atrophy of the macula means there is a clear, well-outlined “island” of damaged (thinned or missing) tissue in the macula, the small center part of the ...

Central areolar choroidal dystrophy (often shortened to CACD) is a rare inherited (genetic) eye disease that mainly damages the macula, the small center area ...

Median arcuate ligament syndrome (MALS) is a rare condition where a band of tissue under the diaphragm (the median arcuate ligament) presses on the celiac ...