Lindsay nails (half-and-half nails) is an apparent leukonychia of the proximal portion of the nail which is white with distal 20-60% reddish-brown
Muehrcke's nails (or Muehrcke lines) are a disorder of the nail bed which can be a reflection of systemic disease. A distinct pattern of paired, white, transverse lines that usually spare the thumbnail and are most commonly in seen in association with hypoalbuminaemia, metabolic stress or chemotherapy.
Philip Gaylord Lindsay (1937 - 2017) was an American physician and psychiatrist. Remembered eponymously for Lindsay nails (1967)
Richard Barratt Terry (1914 - 1960) was an English Physician. Remembered for his description of Terry's Nails (1954); Red half-moon nails (1954)
Robert C. Muehrcke (1921 – 2003) was an American physician, and pioneer in the field of nephrology. Eponym: Muehrcke lines (1956)
Rudolf Adriaan Mees (1873-1964) was a Dutch psychiatrist and physician. Described Mees lines in acute arsenic poisoning (1919)
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