The exact frequency of<unk>  in the population is not known. A 2008 study found<unk>  in 1%, or 15 patients, of 1511 patients admitted to a department of internal medicine in Belgium. Of these, 40%, or 6 patients, turned out to have significant underlying disease of various causes, while 60%, or 9 patients, had no medical problems on further investigations and remained well over the subsequent year.
Nail clubbing
Shell nail syndrome
Rose spots
Acrocyanosis
Brachymetatarsia
Parosmia
Copper beaten skull
Varicose veins