Multiple choice Which among the following disorders causes discolouration of the fingers? Rasmussen's encephalitis Raynaud's phenomenon Relapsing polychondritis Reiter's Syndrome Reveal answer Fill a bubble to check yourself B Correct answer Explanation Raynaud's phenomenon is a vasospastic disorder causing discolouration of the fingers, toes, and occasionally other areas. This condition can also cause nails to become brittle with longitudinal ridges.