Which statement best explains why brown spots appear on the skin of a client with type 1 diabetes?

Which statement best explains why brown spots appear on the skin of a client with type 1 diabetes?

• A. They are due to small blood vessel damage with iron deposition in the blood.
• B. They reflect high glucose content in the skin.
• C. They result from diseased small vessels in the shins.
• D. They are due to accumulation of blood fats.

Answer: (A)

The brown spots on the skin in type 1 diabetes come from microvascular changes in the skin. Long-standing high blood glucose can damage the tiny blood vessels (microangiopathy), making them leaky. A little bleeding under the skin can occur, and as red blood cells break down, iron from hemoglobin is deposited in the surrounding tissue as hemosiderin. That iron deposition gives the patches their brown color, especially on the shins where the skin is more prone to minor trauma. So the appearance reflects small-vessel damage with iron-containing pigment deposits, not simply high glucose in the skin or fats accumulating there.

The brown spots on the skin in type 1 diabetes come from microvascular changes in the skin. Long-standing high blood glucose can damage the tiny blood vessels (microangiopathy), making them leaky. A little bleeding under the skin can occur, and as red blood cells break down, iron from hemoglobin is deposited in the surrounding tissue as hemosiderin. That iron deposition gives the patches their brown color, especially on the shins where the skin is more prone to minor trauma. So the appearance reflects small-vessel damage with iron-containing pigment deposits, not simply high glucose in the skin or fats accumulating there.