Introduction to bacillary rash
Trichophytid (trichophytid) is a secondary allergic inflammatory response of the skin to infected dermatophytes. The primary infection is caused by pro-animal fungi, and the inflammatory reaction is strong, such as purulent sputum, impregnated erosion type. Or a blister-like ankle and so on. Trichophyton rubrum can also cause sputum rash. Local fungal metabolites are antigenic and cause allergic reactions in the whole body and local skin as the blood circulates to the skin. This secondary rash has a negative fungal test, and the edulisin test is positive. With the healing of the primary fungal infection, the rash gradually disappears, and the skin around the active dermatophytosis lesion or the skin away from the lesion suddenly erythema. Papular or vesicular lesions, often accompanied by itching, skin lesions are not specific, often in a certain form. There is a primary fungal infection, the fungus is negative in the rash site, the edulisin test is positive, and the diagnosis can be confirmed by excluding similar diseases. Systemic treatment of systemic symptoms can be oral antihistamines.basic knowledge
Sickness ratio: 0.0001%
Susceptible people: no specific population
Mode of infection: non-infectious
Cause of bacillary rash
(1) Causes of the disease
The primary infections are mostly caused by pro-animal fungi, and the inflammatory reaction is strong, such as purulent sputum, impregnated erosive or blister-type ankle, etc., and the genus Trichophyton can also cause sputum rash, local fungal metabolites are antigenic, with The blood circulation reaches the skin, causing allergic reactions in the whole body and local skin. This secondary rash is negative for fungal examination, and the edulisin test is positive. With the healing of the primary fungal infection, the rash gradually disappears.
Local fungal metabolites are antigenic and cause allergic reactions in the whole body and local skin as the blood circulates to the skin.
Sputum rash prevention
The primary lesion should be actively treated, but when the sputum rash is more severe, a milder treatment should be used first.
Phlegm plague complications Complication
Because the disease is a fungal infection, mainly caused by skin damage, scratching the skin can spread the fungus to other places, causing fungal infection of the skin. If the nail is accompanied by a fungal infection, it will cause onychomycosis. For patients with broken skin, purulent secretion may be caused by bacterial infection, often accompanied by fever, and C-reactive protein and blood picture are obviously increased.
Sputum rash symptoms Common symptoms Foot itching papules Bacterial infection nodules
The skin around the active dermatophytosis or the skin away from the lesion suddenly erythema, papules or vesicular damage, often accompanied by itching, skin lesions are not specific, often in a certain form, common rash type is blisters The main damage, often located in the palm, finger side, foot or calf, is miliary, mung bean to soybean size tension blisters, wall thickness is not easy to break, similar to sweat herpes or contact dermatitis, severe itching, mainly induced by athlete's foot, If the secondary bacterial infection is accompanied by pain, the damage mainly caused by papules is often located in the limbs, a few are located in the trunk, scattered or clustered, some patients have fever, general malaise, such damage is often caused by head lice, and erythema is the main The damage is similar to erysipelas, eccentric annular erythema, nodular erythema, etc., skin lesions are more limited, and calves are more common.
Examination of bacillary rash
The edodesin test is positive and can be diagnosed by excluding similar diseases.
Histopathology: The sputum rash can have moderate acanthosis and increased granular layer. Blisters can be seen in the upper part of the dermis, small blood vessels and capillaries in the skin, and sometimes there are thrombus in the small veins without obvious inflammatory infiltration.
Diagnosis and identification of sputum rash
According to the clinical manifestations, there is a primary fungal infection, the fungus is negative in the rash site, and the edulisin test is positive. The diagnosis can be confirmed by excluding similar diseases.
Need to be differentiated from dermatophytosis.