Yellow nail syndrome: report of five cases.

Five patients with the yellow nail syndrome triad are described; all five had yellow nails, primary lymphedema, and respiratory tract involvement. Four of the patients noted the onset of the syndrome after an episode of pneumonia. Four patients had a chronic productive cough, two had bronchiectasis, two had chronic sinusitis, and one had chronic pleural effusion. Two of the five had spontaneous improvement of their yellow nails.