Juvenile diabetes and teen diabetes both refer to type 1 diabetes, which is a chronic condition that affects how the body regulates blood sugar (glucose) levels.

Type 1 diabetes is typically diagnosed in children, adolescents, or young adults, hence the term "juvenile" diabetes. However, it can develop at any age.

Type 1 diabetes is a chronic condition in which the pancreas produces little or no insulin. Without insulin, the body cannot convert glucose from food into energy, and glucose builds up in the bloodstream, leading to high blood sugar levels.

Symptoms of type 1 diabetes may include increased thirst and urination, blurred vision, fatigue, unexplained weight loss, and frequent infections. Treatment typically involves daily insulin injections or an insulin pump, monitoring blood sugar levels regularly, eating a healthy diet, and getting regular exercise.

It's important to note that there is also type 2 diabetes, which is more commonly diagnosed in adults and is often associated with obesity and a sedentary lifestyle. 

Treatment for type 2 diabetes may involve lifestyle changes, such as losing weight and increasing physical activity, and medications to help control blood sugar levels.