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My father is a diabetic patient and 65 year old. Now days some black spots are found on his leg and also some color change occurred on both knees. Is this condition is dangerous?

2 Doctors Answered
It needs examination and so please take him to the regular doctor. Let the doctor diagnose and give his opinion. Hope blood sugar levels are in good control.
Skin Problems Linked to Diabetes and Insulin Resistance. Acanthosis nigricans. This is a skin problem that results in the darkening and thickening of certain areas of the skin especially in the skin folds. The skin becomes tan or brown and is sometimes slightly raised and described as velvety.
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