[Risk factors for disseminated herpes zoster].

Background: When skin abnormalities in patients extend over several dermatomes, disseminated herpes zoster should be suspected. This complication is most often seen in immunocompromised patients.

Case Description: An 87-year-old patient came to the dermatology outpatient clinic with several vesicles scattered over her body.

[A 37-year-old woman with anogenital warts].

A 37-year-old woman, who had been suffering from Crohn's disease since twenty-two years, visited our dermatology outpatient clinic with complaints of wart-like lesions in the vulvar and perianal regions. On physical examination, nodules, plaques and tumours were seen. Histological examination showed features compatible with Crohn's disease.

[A man with skin lesions on the back of his hand].

A 70-year-old man came to the clinic with skin lesions after he cut himself with an orchid leaf. Physical examination showed some crusts at the cut and erythematous soft nodules on the back of his hand. It appeared the man also had an aquarium.

Chronic leg ulcer caused by Mycobacterium immunogenum.

Rare tropical skin diseases are seen more frequently in Western countries because of the increased popularity of visiting tropical regions. A 55-year-old white man developed a painless leg ulcer after traveling in Guatemala and Belize. A mycobacterium was cultured from a biopsy specimen and was identified as Mycobacterium immunogenum by 16S recombinant deoxyribonucleic acid sequence analysis.