Spots on the lower thighs may be allergic purpura, seborrheic keratosis, papular urticaria, etc. The treatment is different according to the different diseases.
1. Henochromatosis purpura: it will show scattered bleeding spots on the skin and mucous membranes, most common in the lower limbs, and severe cases need to use hormonal drugs orally or by injection.
2. Seborrheic keratosis: very small spots will appear on the limbs, the back of the hands, chest and back, etc. They can be removed by carbon dioxide laser, liquid nitrogen freezing and other physical therapies.
3. papular urticaria: it will show localized edematous erythema, wind, etc., and petechiae can be seen at the biting site, accompanied by itching symptoms, often treated with hydrocortisone butyrate cream, mometasone furoate cream and so on.
Spots under the thighs, to the hospital as soon as possible by a specialist doctor for diagnosis, symptomatic treatment, medication need to follow the doctor’s instructions, do not self-medication, so as not to delay the disease.