ABSTRACT
Chromoblastomycosis is a chronic granulomatous mycosis of the skin and subcutaneous tissue caused by traumatic inoculation with dematiaceous fungi. This disease primarily affects agricultural workers, who are mostly men. We present a case of chromoblastomycosis in a 63-year-old male farmer patient with dermatosis over 50 years of evolution, with warty, erythematous, and scaly plaques that predominate on the left hemithorax. Direct examination with potassium hydroxide (KOH) revealed numerous fumagoid cells. Amplification and sequencing of the internal transcribed spacer (ITS) and translation elongation factor 1-alpha (TEF-1a) gene revealed that chromoblastomycosis was caused by Cladosporium cladosporioides. The chromoblastomycosis was treated with itraconazole and fluconazole without any improvement, and amphotericin B was administered with partial improvement.
Subject(s)
Erythema/diagnosis , Hyperpigmentation/diagnosis , Keratoderma, Palmoplantar/diagnosis , Skin Diseases/diagnosis , Buttocks , Child , Diagnosis, Differential , Erythema/complications , Extremities , Face , Humans , Hyperpigmentation/complications , Hypertrophy , Keratoderma, Palmoplantar/complications , Male , Malignant Atrophic Papulosis/diagnosis , Skin/pathology , Skin Diseases/pathologyABSTRACT
A 38-year-old man presented with axillary freckling, multiple café au lait macules and neurofibromas on the scalp, trunk and extremities. In addition, he had a patch of white hair on the right parieto-occipital area overlying a scalp neurofibroma. He was diagnosed with poliosis circumscripta associated with neurofibromatosis 1.
Subject(s)
Hair Diseases/complications , Hypopigmentation/complications , Neurofibromatosis 1/complications , Adult , Humans , MaleSubject(s)
Exostoses/diagnosis , Nail Diseases/diagnosis , Toes/pathology , Adolescent , Humans , Male , Nail Diseases/pathologyABSTRACT
Demodex folliculorum and Demodex brevis are obligatory ectoparasites of the pilosebaceous unit in humans. Although most people are infested with these mites, only a small number develop clinical symptoms of demodicidosis. We report a case of demodicidosis in a 6-year-old boy who had lesions on the scalp, forehead, neck, and anterior chest for 18 months. Our clinical diagnosis at the time was favus. The microscopic examination of the hair in a 10% potassium hydroxide preparation showed no fungal spores or hyphae, but many eggs and adult mites of D folliculorum. The patient was treated with oral ivermectin and topical permethrin, and the lesions resolved completely. Demodicidosis is a rare disease that can clinically mimic favus and other crusted scalp dermatoses in children.
Subject(s)
Mite Infestations/diagnosis , Scalp Dermatoses/diagnosis , Tinea Favosa/diagnosis , Bacterial Infections/complications , Bacterial Infections/diagnosis , Bacterial Infections/drug therapy , Child , Diagnosis, Differential , Floxacillin/therapeutic use , Humans , Ivermectin/therapeutic use , Male , Mite Infestations/complications , Mite Infestations/drug therapy , Permethrin/therapeutic use , Scalp Dermatoses/drug therapyABSTRACT
Tinea incognito is a ringworm infection modified by corticosteroids. We report a case of a 2-year-old girl who developed tinea incognito due to Trichophyton mentagrophytes after applying methylprednisolone aceponate for 3 months. Diagnosis was confirmed by histopathologic and mycological examination, which led to the identification of Trichophyton mentagrophytes var. mentagrophytes, a zoophilic dermatophyte. Previous corticosteroid use in dermatophyte infections can alter their clinical appearance leading to misdiagnosis and delay in appropriate therapy.
