Type 1 diabetes occurs more commonly in children and young adults but can appear at any age.
Most often, patients with type 1 diabetes have symptoms of recent weight loss, increased thirst (polydipsia) or more frequent urination (polyuria). Other symptoms due to high blood sugars include-
In approximately 30-40% of children with type 1 diabetes, ketoacidosis may be the first symptom of their disease. They usually have polyuria, polydipsia and weight loss but will be lot sicker, sometimes with drowsiness or confusion.
1. Simmons KM, Michels AW. Type 1 diabetes: A predictable disease. World J Diabetes. 2015 Apr 15;6(3):380-90.