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Pulmonary Alveolus Definition: Pulmonary alveolus (plural: alveoli, from Latin alveolus, “little cavity”), informally known as air sac, is any of the innumerable minuscule, thin-walled, capillary-rich…

About Pneumonia Definition: Pneumonia is an infection in one or both lungs. It can be caused by bacteria, viruses, or fungi. Bacterial pneumonia is the…

Actinic Cheilitis Definition: Actinic cheilitis, sometimes known as “farmer’s lip” or “sailor’s lip,” is a precancerous condition related to cumulative lifetime sun exposure. Essentially it…

The cost of money refers to the price paid for using the money, whether borrowed or owned. In a sentence, it is the rate of interest…

Angular Cheilitis Definition: Angular cheilitis (AC) is a common inflammatory condition affecting the corners of the mouth or oral commissures. It is also known as…

Epidermis Definition: The epidermis is the outer layer of the three layers that make up the skin, the inner layers being the dermis and hypodermis.…

Dysesthesia Definition: Dysesthesia is pain triggered by the central nervous system, commonly associated with multiple sclerosis (MS). Pain doesn’t always enter the discussion when talking…

Proteus Syndrome Definition: Proteus Syndrome is a rare genetic disorder, caused by mutant genes. The skin, bone and tissue disorder is asymmetric. The overgrowth is…

The concept of the Cost of Money The cost of money refers to the price paid for using the money, whether borrowed or owned. In…

Schimmelpenning Syndrome Definition: Schimmelpenning syndrome (SS) is a neurocutaneous disorder, which was related to epidermal nevus syndromes and characterized by craniofacial nevus, neurologic anomalies, and…

Klippel–Trénaunay Syndrome (KTS) Definition: Klippel-Trenaunay syndrome (KTS) is a rare congenital vascular disorder in which a limb may be affected by port wine stains (red-purple…

Tuberous Sclerosis Definition: Tuberous sclerosis (TS), or tuberous sclerosis complex (TSC), is a rare genetic condition that causes noncancerous, or benign, tumors to grow in…