Symptoms of tinea corporis and tinea cruris, teach you how to identify

Tinea corporis and tinea cruris is a general term for tinea corporis and tinea cruris. Clinically, people often discover this disease from its daily manifestations. So, what are the symptoms of tinea corporis?

1. Tinea corporis:

The severity of the inflammatory response depends on the pathogen and the host's immune response. Hair follicles are reservoirs of infection, so areas with abundant hair follicles will show a stronger inflammatory response. The incubation period is generally 1 to 3 weeks. The infection spreads centrifugally from the site of skin invasion and recedes centrally, forming typical annular lesions of varying sizes that may also be arcuate, spiral, etc. Most skin lesions have scales. If topical glucocorticoid preparations are used, the scales will decrease or disappear (tinea indica). Conscious itching and burning sensation.

Other clinical forms of tinea corporis include deep tinea corporis, Majocchi granuloma, and imbricate tinea corporis. Profound tinea corporis is caused by an exaggerated inflammatory response to dermatophytes (similar to kerion of the scalp) and may present as granulomas or wart-like lesions. Majocchi granuloma is caused by Trichophyton rubrum and is characterized by perifollicular pustules or granulomas. It usually occurs in women who have tinea pedis or onychomycosis and who shave their legs frequently. It occurs when infected hairs penetrate the wall of the hair follicle. Lesions may be extensive, may proliferate, and may occur in immunosuppressed patients. Tinea imbricata is a dermatophyte disease caused by the anthropogenic dermatophyte Trichophyton concentricum. It appears as concentric rings, most of which have white raised scales. The centripetal edge is free, while the centrifugal edge is close to the skin surface. Sometimes the scales fall off and leave light brown concentric circles.

2. Tinea cruris:

It is more common in men (the scrotum can provide a moist and warm environment) and is often associated with tinea pedis. Other predisposing factors include obesity and excessive sweating. The typical lesion is well-defined with raised, red, scaly, mobile margins that may contain pustules or blisters. The lesions are initially annular and may develop in a creeping manner and may occur unilaterally or bilaterally. The scrotum is usually spared, but if it is involved, cutaneous candidiasis should be considered.