Blue-green to purplish complexion

Smoker's face
In Chinese medicine blue-green colouration indicates stagnation or obstruction of blood and qi. It also appears where there is liver disharmony or wind disharmony.
Dr Douglas Model of Eastbourne in England added the term smoker's face to the medical lexicon in 1985 after surveying 116 patients and correctly identifying roughly half of the current smokers by their facial features alone. A smoker's face is inclined to appear older than its years, etched and wrinkled, with gaunt-looking features, prominent underlying bones, shriveled skin, gray with purplish blotches.
(J) Problems under consideration