Signs and Symptoms
Clubbing develops in five steps:
- Fluctuation and softening of the nail bed (increased ballotability)
- Loss of the normal <165° angle (Lovibond angle) between the nailbed and the fold (cuticula)
- Increased convexity of the nail fold
- Thickening of the whole distal (end part of the) finger (resembling a drumstick)
- Shiny aspect and striation of the nail and skin
Schamroth's test or Schamroth's window test (originally demonstrated by South African cardiologist Leo Schamroth on himself) is a popular test for clubbing. When the distal phalanges (bones nearest the fingertips) of corresponding fingers of opposite hands are directly opposed (place fingernails of same finger on opposite hands against each other, nail to nail), a small diamond-shaped "window" is normally apparent between the nailbeds. If this window is obliterated, the test is positive and clubbing is present.
Read more about this topic: Nail Clubbing
Famous quotes containing the words signs and, signs and/or symptoms:
“But I will harden Pharaoh’s heart, and I will multiply my signs and wonders in the land of Egypt.”
—Bible: Hebrew, Exodus 7:3.
“Surrealism is a bourgeois disaffection; that its militants thought it universal is only one of the signs that it is typically bourgeois.”
—Susan Sontag (b. 1933)
“The human condition is such that pain and effort are not just symptoms which can be removed without changing life itself; they are the modes in which life itself, together with the necessity to which it is bound, makes itself felt. For mortals, the “easy life of the gods” would be a lifeless life.”
—Hannah Arendt (1906–1975)