MCI: methylchloroisothiazolinone MI: methylisothiazolinone INTRODUCTION Methylisothiazolinone and methylchloroisothiazolinone (MI/MCI) are broad-spectrum preservatives widely used in cosmetics and household and industrial products. It is well known that MI/MCI can cause allergic contact dermatitis with a spongiotic reaction pattern. Because of this reaction, restrictions have been placed on the...

We report a case of a 66-year-old male who developed an itchy eruption while taking an antihypertonic drug containing eprosartan and hydrochlorothiacide after sun exposure. The lesions resembled a lichenoid appearance that was confirmed by the histological study. There are few reports in the literature of lichenoid reactions to these compounds, so we review the characteristics of themselves as ...

Chronic graft versus host disease (GVHD) remains the most common late complication of allogenic stem cell transplantation and the most frequent cause of morbidity and mortality in these patients. To control this condition, immunosuppressive drugs are usually administered at a high dose and for a long time, which may result in several side effects. 5 patients with clinically and histopathologica...

Oral lichenoid reactions are considered variants of oral lichen planus and may be regarded as a disease by itself or as an exacerbation of an existing oral lichen planus by the presence of medication or dental materials. They represent a type IV hypersensitivity reaction and most commonly affect the oral mucosa in direct contact with an amalgam restoration. Oral lichenoid reactions can cause si...

BACKGROUND Lichen planus is a common skin disorder of unknown etiology. Most cases are idiopathic, but substances such as gold, antimalarials, penicillamine, thiazide diuretics, β-blockers, arsenic and nonsteroidal anti-inflammatory drugs have been implicated as trigger factors. CASE PRESENTATION We report the case of a lichenoid eruption in a male drug addict who administered oral heroin (di...

Background: Lichenoid disorders are often difficult to diagnose clinically. Dermoscopy can act as an alternative technique to skin biopsy for diagnosis of various lichenoid dermatoses. Study aim: To study the correlation of dermoscopic with histopathological findings in various lichenoid dermatoses Methods: Fifty patients with clinical picture of lichenoid dermatoses were examined first under t...

BACKGROUND AND OBJECTIVES Both the diagnosis and the treatment of lichenoid dermatosis are often difficult and can be time-consuming. There are now more and more publications about the use of laser systems--especially the flashlamp-pumped pulsed dye laser--in the treatment of inflammatory dermatoses, although the laser's exact mechanism of action in these cases is not yet clear. STUDY DESIGN/...

Lichen planus is a dermatologic disease of unknown etiology characterized by keratotic plaques on the skin. Many patients also harbor white lesions of the oral mucosa. The literature contains numerous reports of lichen planus-like lesions evolving in conjunction with the administration of a variety of pharmacologic agents. It is difficult, if not impossible, to distinguish such lesions from one...