This could be chronic venous pigmentation or diabetic dermopathy, which results in persistent brownish patches on the legs, particularly in those with borderline diabetes or high blood pressure. Keep your blood pressure and blood sugar under control, moisturize every day, refrain from itching, and consult a dermatologist for confirmation and potential topical treatment.

The marks are returning because steroid creams like Momate can thin the skin and make it more sensitive. Use a gentle face wash, apply sunscreen daily, and try safe options like azelaic acid or silicone gel. If spots keep returning, visit a dermatologist for treatments like retinoid creams or simple clinic procedures.