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Vitiligo is a common dermatological manifestation of obscure etiology, affecting mostly healthy people. It has also been observed in association with sunburn, various chemicals, repeated friction, physical trauma, and numerous systemic and cutaneous diseases. However, white discoloration of teeth in these patients has not yet been reported. We describe a 14-year-old boy with vitiligo who presented with white patches on the surface of his upper, central incisors. Medical history and laboratory tests excluded those complications documented in the literature known to be associated with white discoloration of the teeth, such as disturbances of calcium and phosphate metabolism (as in vitamin D refractory rickets), hypoparathyroidism, gastroenteritis, celiac disease, premature birth, hyperplasia of the enamel and prolonged ingestion during tooth formation of water containing excessive fluoride.

A rare type of cutaneous papular sarcoidosis is the lichenoid form. We describe a 36-year-old woman who presented with a symmetrical, asymptomatic lichen-like eruption on her upper limbs. The biopsy showed a non-necrotizing granulomatous infiltrate compatible with sarcoid. Chest X-ray revealed Type I bilateral, asymptomatic, hilar adenopathy with no parenchymal abnormalities. High levels of angiotensin converting enzyme and a 67gallium lung scan supported the diagnosis of sarcoidosis.

The commonest form of cutaneous tuberculosis is lupus vulgaris, whose incidence has steadily decreased during recent decades. We describe an 82-year-old man who presented with a large plaque of lupus vulgaris on his chin and upper neck which had been present for 71 years. This case clearly emphasizes the need for increased awareness of this disease, since its frequency may be greater than generally thought.