Red pimple on thigh

Introduction Long red thighs are common in the femoral hernia. Femoral hernia refers to skin dysentery that occurs in the human scrotum and groin. This Dermatomycosis caused by Dermatomyces infection mainly occurs in the thigh (both sides of the thigh). A shareholder. This kind of rickets can develop to the perineum, perianal and buttocks, so it has the name of "female femoral sputum".

Cause

It can be caused by femoral hernia, eczema, atopic dermatitis, contact dermatitis, etc., mainly a reaction of skin allergies.

an examination

Related inspection

Skin elasticity examination, skin fungal microscopy, routine routine, delayed skin allergic reaction

Skin tests are the most commonly used specific tests, including patches, scratches, spurs, and intradermal injections. It is most commonly used in clinical trials for picking and intradermal tests, such as a negative test; it can be used for intradermal test.

Differential diagnosis

1, seborrheic dermatitis: sometimes can also invade the genital area, the rash is pale red spots, there is desquamation, some are ring-shaped, the boundary is clear, but the direct microscopic examination of fungi is negative.

2, red sputum: skin disease caused by a coryneform bacillus, common in the armpits, thighs, etc., the skin of the lesion is brick red, no inflammatory ring at the edge, no itching, direct microscopic examination of fungi is negative.

3, psoriasis: commonly known as psoriasis, can invade the thigh, showing ring or plaque erythema, generally thick surface of the scales, other parts of the body can also have the same rash.

4. Scrotal eczema and dermatitis: The lesions are mainly mossy or eczema-like changes, the edges are unclear, the center has no self-healing tendency, the itch is significant, and the development of skin lesions is not closely related to the season. It should be noted that the femoral hernia is prone to eczema-like changes after intense rubbing, hot water scalding or topical irritant drugs. The course of the disease is repeated and it is more difficult to treat.

5, vitamin B2 deficiency: is due to the lack of vitamin B2 (riboflavin) in the skin caused by skin, scrotum and oral syndrome, mainly scrotal inflammation, began to appear diffuse red patches of scrotum, clear boundaries, margins Slightly higher than the leather surface, covered with grayish white scales or brownish black thick enamel, scaly bacteria negative. At the same time, combined with glossitis and angular cheilitis, there is a tendency of collective disease in the same food unit.

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