A 35 year old patient suffering from intermittent fever of unclear aetiology had been hospitalised for 5 weeks at the urology ward, later infectious diseases clinic and finally at the internal medicine ward. An examination at dermatovenereology clinic returned the diagnosis of gonorrhoeal urethritis and subsequently also erythema nodosum in the lower legs area.
Due to hilar lymphadenopathy revealed by an x-ray examination, the patient was sent to a pneumology clinic, with suspected sarcoidosis. Further tests confirmed this diagnosis and the cause of the fevers was thus made clear.
The case study shows the irreplaceable role a dermatovenerologist plays in diagnosing internal diseases.