Tinea corporis

Introduction Tinea corporis are superficial fungal infections on smooth skin other than the hands, feet, perineum and thighs caused by dermatophytes. The so-called round sputum, money sputum and pen tube sputum of traditional Chinese medicine are similar to the scope of this disease. For example, "Theories of the Sources of Diseases": "The shape of the round scorpion, the essays are hidden, the four sides are red, and the itch is also the same, and the insects are also in them." Another example is the record: "The state of rickets, the flesh concealed like money, gradually grow, or round or oblique, itching has a sputum, such as worms, sputum has juice." Chinese medicine believes that body phlegm is rheumatic evil, and guests are ill, or they are sick because of contact with unclean things.

Cause

The disease is mainly caused by Trichophyton rubrum, Trichophyton rubrum, Trichophyton rubrum, Microporosporium rust, Microsporum canis. The onset may be caused by direct or indirect contact with the patient's contaminated tub, bath towel, and the like. It can also be spread from the patient's original handcuffs, athlete's foot, femoral hernia, armor, head lice and so on. The incidence is closely related to the body's resistance. Patients with diabetes and consumptive diseases are more susceptible to body ailments.

an examination

Related inspection

Skin lesion fungus examination urine routine blood routine routine

It is mainly determined according to the clinical manifestations. If necessary, the dandruff can be scraped from the edge of the lesion for direct microscopic examination. After the fungal hyphae or spores are found, the diagnosis can be confirmed.

Histopathology: commonly used PAS staining, hyphae and spores can be found in the stratum corneum of the epidermis, and hyphae grow in parallel with the stratum corneum. In the case of granulomatous lesions, hyphae can be found in the hair follicle and upper part of the dermis. The epidermis may have parakeratosis, hyperkeratosis, thickening of the spinous layer, edema of the dermal papilla, infiltration of inflammatory cells around the blood vessels, and sometimes under the stratum corneum. Or blister formation in the epidermis.

Differential diagnosis

Differential diagnosis of body lice:

1. Rose pityriasis is easily confused with body lice, but it does not occur above the neck. The skin lesions are oval, with marginal scales, and the inflammation is more pronounced. The long axis of the rash is consistent with the dermatoglyph, and the mother plaque often appears first, and the fungal test is negative.

2. Seborrheic dermatitis occurs in the fatty area, the damage is subacute inflammation, the surface is greasy, small scales, and itching is severe. The fungal test was negative.

3. Psoriasis vulgaris is sometimes ring-shaped, but the base is light red infiltration, covered with multiple layers of silvery white scales, a bit of bleeding after stripping. Occurs in the extremities and joints of the extremities. The fungal test was negative.

In addition, it needs to be differentiated from chronic eczema, neurodermatitis, and simple pityriasis.

It is mainly determined according to the clinical manifestations. If necessary, the dandruff can be scraped from the edge of the lesion for direct microscopic examination. After the fungal hyphae or spores are found, the diagnosis can be confirmed.

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