Observation of the extremities

(a) Strong extremities with a normal muscle tonus are a sign of sufficient Qi, Blood, and body fluids. Swelling may be a sign of Dampness, excess, or deficiency.
(b) The nails and nail beds are related to the Liver.
  (i) Dull and brittle nails can indicate a deficiency of Liver Blood.
 (ii) Pale nail beds are an indication of Cold or Blood Deficiency.
(iii) Red nail beds indicate presence of Heat.
(iv) Bluish nail beds indicate stasis or presence of Cold.

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