Median nail dystrophy (also known as "Dystrophia unguis mediana canaliformis," "Median canaliform dystrophy of Heller,": 657  and "Solenonychia") consists of longitudinal splitting or canal formation in the midline of the nail, a split which often resembles a fir tree, occurring at the cuticle and proceeding outward as the nail grows. : 788 Thumbs, which are the most commonly involved, usually show an enlarged lunula resulting probably from repeated pressure applied on the base of the nail. : 657

See also
Nail (anatomy)
Habit-tic deformity


== References ==
Tabloid may refer to:

Tabloid journalism, a type of journalism
Tabloid (newspaper format),  a newspaper with compact page size
Chinese tabloid
Tabloid (paper size), a North American paper size
Sopwith Tabloid, a biplane aircraft
Tabloid (film), a 2010 documentary by Errol Morris
Tabloid (TV series), a Canadian television series

See also
The Tabloid (Matlock episode), 1994 episode of the television show Matlock
Tabloid Magazine (disambiguation)