Diabetes is a number of diseases that involve problems with the hormone insulin. There is no cure for diabetes. People with diabetes need to manage their disease to stay healthy.

An A-to-Z guide to the language of diabetes.

There are three major types of diabetes: type 1 diabetes, type 2 diabetes, and gestational diabetes.

The term "diabetes insipidus" has nothing to do with high blood sugar. Instead, it's a general term for any condition that causes your body to make a lot of urine.

The warning signs of diabetes can be so mild that you don't notice them. That's especially true of type 2 diabetes. With type 1 diabetes, the symptoms usually happen quickly, in a matter of days or a few weeks. 

Diabetes and prediabetes are diagnosed with a fasting plasma glucose test, oral glucose tolerance test, or random plasma glucose test.

Although doctors don't routinely use it anymore, the oral glucose tolerance test is the gold standard for diagnosing type 2 diabetes. It's still commonly used to diagnose gestational diabetes, a condition that a woman can get while pregnant.

The hemoglobin A1c test, also called HbA1c, glycated hemoglobin test, or glycohemoglobin, is an important blood  test that shows how well your diabetes is being controlled.

How do you know if you have diabetes? Learn what's involved in the diagnosis.

Different doctors can help you manage different aspects of your diabetes. Find out who you need on your team.

Many forms of insulin treat diabetes, including rapid-acting, short-acting, intermediate-acting, long-acting, and pre-mixed. Learn which type is best for your diabetes.

Has your doctor prescribed insulin to help manage your type 1 or type 2 diabetes? You’ll want to know how and when to take it, what side effects could happen, and what other changes you may need to make.

Blood sugar control is at the center of any diabetes treatment plan. High blood sugar, or hyperglycemia, is a major concern and can affect people with type 1 and type 2 diabetes.

People with diabetes get hypoglycemia (low blood sugar) when their bodies don't have enough sugar to use as fuel. It can happen for several reasons, including diet, some medications and conditions, and exercise. 

Continuous glucose monitors are FDA-approved systems that track your blood sugar levels day and night. Learn how they work and who might benefit from using one.

Most people with diabetes need to check their blood sugar (glucose) levels regularly. The results help you and your doctor manage those levels, which helps you avoid diabetes complications.

Nerve pain caused by diabetes, known as diabetic peripheral neuropathy, can be severe, constant, and hard to treat. Controlling your blood sugar can make a big difference.

Skin conditions related to this disease are common. Fortunately, most can be successfully treated before they turn into a serious problem. The key is to catch them early.

Diabetic nephropathy -- kidney disease that results from diabetes -- is the No. 1 cause of kidney failure. Learn the symptoms, how it's diagnosed, and how to treat it.

Most infections in people with diabetes can be treated. But you have to be able to spot the symptoms. Learn what to look for.