A dark patch (or band) of velvety skin on the back of your neck, armpit, groin, or elsewhere could mean that you have too much insulin in your blood. This is often a sign of prediabetes. The medical name for this skin condition is acanthosis nigricans.
When this develops on the fingers, toes, or both, the medical name for this condition is digital sclerosis.
On the hands, you’ll notice tight, waxy skin on the backs of your hands. The fingers can become stiff and difficult to move. If diabetes has been poorly controlled for years, it can feel like you have pebbles in your fingertips.
It’s rare, but people with diabetes can see blisters suddenly appear on their skin. You may see a large blister, a group of blisters, or both. The blisters tend to form on the hands, feet, legs, or forearms and look like the blisters that appear after a serious burn. Unlike the blisters that develop after a burn, these blisters are not painful.
People who have diabetes tend to get skin infections. If you have a skin infection, you’ll notice one or more of the following:Hot, swollen skin that is painfulAn itchy rash and sometimes tiny blisters, dry scaly skin, or a white discharge that looks like cottage cheese
Having high blood sugar (glucose) for a long time can lead to poor circulation and nerve damage. You may have developed these if you’ve had uncontrolled (or poorly controlled) diabetes for a long time.
This skin condition causes spots (and sometimes lines) that create a barely noticeable depression in the skin. It’s common in people who have diabetes. The medical name is diabetic dermopathy. It usually forms on the shins. In rare cases, you’ll see it on the arms, thighs, trunk, or other areas of the body.
When these bumps appear, they often look like pimples. Unlike pimples, they soon develop a yellowish color. You’ll usually find these bumps on the buttocks, thighs, crooks of the elbows, or backs of the knees. They can form anywhere though.