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  4. what are the causes of chromatomycosis and what are the causes of chromatomycosis

what are the causes of chromatomycosis and what are the causes of chromatomycosis

what are the causes of chromatomycosis and what are the causes of chromatomycosis

The main etiology of chromomycosis is caused by dark chromosporaceae fungi

I. Etiology

Dark hyphomycosis is also called phaeosporotrichosis, phaeomycotic cyst, cerebral chromomycosis and so on. There are more than 30 genera and more than 50 species of pathogenic fungi in the family Dacrochromosporaceae, all of which are brown separated hyphae. When the immunity of the body declines, spores and hyphae in the air can infect the human body through lungs, skin wounds or other ways, and can spread to the whole body through blood circulation. Dark hyphomycosis is rare and can be divided into two categories: subcutaneous dark hyphomycosis and systemic dark hyphomycosis. Dark hyphomycosis of subcutaneous tissue is often manifested as isolated subcutaneous or muscle abscess, and can also be manifested as subcutaneous cyst, which is called dark fungal cyst. If blood spread, lung, bone, endocardium and brain are most likely to be involved, and liver, spleen and kidney are often involved, with suppurative granulomatous reaction accompanied by abscess formation, and most of them have poor prognosis, and generally die within one year of onset.

Second, the pathogenesis

This disease can be caused by Pei's, compact, verrucous, dermatitis-staining fungi and branched spore fungi. Cladosporium carinii is the most common in China, followed by Pei's staining fungi, compact staining fungi, Zhen Shi bottle fungi and so on. Recently, it has been found that it is caused by dark hyphomycetes such as Escherichia spinosa. There are more than 30 genera and more than 50 species of pathogenic fungi in the family Dacrochromosporaceae, all of which are brown separated hyphae. Round brown-yellow fungal cells in tissues or pus, with a diameter of 6 ~ 12 μ m, do not sprout, and are widely distributed in nature. They are mostly parasitic in humid soil and rotten grain and grass wood. When the immunity of the body decreases, spores and hyphae in the air can infect the human body through lungs, skin wounds or other ways, and can spread to the whole body through blood circulation. Occasionally, it can invade brain tissue and other organs.

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