Vitiligo is a condition in which white spots or patches appear in areas of the skin that have lost melanocytes. Melanocytes are cells that produce melanin, a pigment that gives skin its color. Areas often affected include the face, knees, elbows, … [Read more...]
Drug-Induced Peripheral Neuropathy
The term peripheral neuropathy applies generally to damage to nerves of the peripheral nervous system. There are numerous causes, including genetic diseases, metabolic/endocrine complications, inflammatory diseases, vitamin deficiencies, malignant … [Read more...]
Serum Sickness and Serum Sickness-Like Reactions
Serum sickness is an immune system, allergy-like reaction to injected animal proteins in antiserum or other medications used to treat immune conditions. Serum sickness-like reactions are similar to serum sickness reactions, but they are to certain … [Read more...]
Cardiovascular: Arrhythmia / Heart Palpitations
Arrhythmias, or heart rhythm abnormalities, are also known as dysrhythmias. An abnormally fast heart rhythm (greater than 100 beats per minute) is called a tachycardia, and an abnormally slow one (slower than 60 beats per minute) is known as a … [Read more...]
Kidney Stones (Renal Calculi / Urinary Calculi)
Kidney stones (nephrolithiasis) and stones in the urinary tract (urolithiasis) are solid concretions of dissolved minerals that may form usually in the kidney or bladder (albeit uncommonly). They are also known as renal calculi. The most common … [Read more...]
Drug-Induced Sleep Disorders / Sleep Disturbances
There is a multitude of drugs the side effects of which can affect sleep by stimulating or aggravating sleep disorders. Drugs may suppress rapid eye movement (REM) sleep, affect slow-wave sleep (SWS), or cause insomnia, parasomnias, nightmares, … [Read more...]
Progressive Multifocal Leukoencephalopathy (PML)
Progressive multifocal leukoencephalopathy (PML) is also known as progressive multifocal leukoencephalitis. It is a rare but usually fatal viral infection and inflammation of the white matter of the brain at multiple locations. The virus is believed … [Read more...]
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