Syphilis patients with erythema at the base of the thigh may be syphilis rash, may also be secondary infection caused by ringworm or eczema.
1. Syphilis rash: the typical symptoms of the skin and mucous membranes of second-stage syphilis, occurring in the palms of the hands before and after, the soles of the feet and other parts of the limbs and trunk before the upper can also appear. This rash is more varied, can be spot rash, papule, maculopapular rash, ulcerated rash, etc., the color can be red, usually not accompanied by itching.
2. Ringworm: Ringworm caused by dermatophyte infection can also involve the roots of the thighs. At the beginning of the lesion can be red pimples, small blisters or herpes papules, and then can form a clear border and flaky red patches, pimples can leave pigmentation on the surface of the skin, and accompanied by itching or burning sensation and other skin discomfort symptoms.
3. Eczema: it occurs in the exposed parts, the root of the thigh can also be involved, erythema, papules, papules, etc. can be symmetrically distributed, often accompanied by intense itching.
It is recommended that patients with syphilis should consult a doctor for a clear diagnosis of erythema on the thigh roots, and should not take any treatment measures without authorization.