Although PCR was superior to the Tzanck test, the Tzanck test has also been proven to be a reliable diagnostic method, with a sensitivity of 76.9% and a specificity of 100%. We recommend the use of this easy, quick, reproducible, and inexpensive diagnostic test more often in dermatologic practice, especially in cutaneous herpes virus infections.

Clinical manifestations of benign (reactive) plasma cell proliferations of the skin and mucosa consist of a relatively rare and distinct group in dermatologic disorders. They have generally been named according to their localization. We report a typical case of mucocutaneous plasmacytosis located on intertriginous areas of the skin as well as mucosa with a perianal tumoral mass diagnosed as plasmoacanthoma. To our knowledge, this is the first detailed case report, at least in English literature.

We report a case of amyloidosis cutis dyschromica with diffuse postinflammatory-type hypo- and hyperpigmentation all over the body. The diagnosis was confirmed with routine light microscopic and immunohistochemical staining methods. The patient was treated with acitretin with a good response.

We concluded that eradication of H. pylori may have reducing effects on the recurrence and amelioration period of the RAS.