Pregnancy. Pregnancy is complicated by diabetes. The unborn child tends to be larger in size, which can lead to delivery complications. In addition, the unborn child is at risk for conditions such as heart defects. There is a difference between pregnancies in patients who already had diabetes and new onset diabetes during pregnancy. Ask your obgyn or endocrine doctor.
Dry eyes. Patients with diabetes, especially uncontrolled diabetes, tend to develop peripheral neuropathy including the nerves of cornea. This prevents the corneal nerves from sending the message to the brain that the eyes are dry. Blinking causes irritation to the eyes in the face of less tears. This is one reason contact lenses are a bad idea for patients with diabetes. This must be treated.
Ocular stroke. Diabetes predisposes patients to ocular stroke. Ocular strokes is a broad term, the specific terms used by eye physicians are vein occlusions of the eye, retina occlusions, optic nerve ischemia events, the events can be partial or complete. These events tells the physician and patient that the possibility of an brain stroke is higher. A work up to determine what led to the event is appropriate.
Glaucoma. Studies that show that diabetes is a risk factor for glaucoma. Conversely, other studies show that diabetes is not a risk factor for glaucoma. There are many types of glaucoma. The most broad category is open angle glaucoma versus closed angle glaucoma. The category under each open and closed is primary or secondary. In diabetes, neovascular glaucoma can occur when retinopathy is advanced.
Limb loss. The patient most likely to have legs or feet amputated is a person with uncontrolled diabetes.
Heart, kidney diseas. There are many complications of diabetes. Most important, it is considered the same as if you had a heart attack. That means your doctor will treat you as if you already had a heart attack even if you didn't actually. Diabetes also affects the kidneys, eyes, nerves, and stomach all due to its effects on your blood vessels. All of these problems can be mitigated by controlling diabetes.