The medical history for a person suspected of having type 1 diabetes includes questions about symptoms, family history of the disease, and personal medical history. Questions may include the following:

• Have you had increased thirst, increased urination, and fatigue?
• How long have the symptoms been present?
• Have you had an increase in appetite?
• Have you lost weight lately?
• Is there a family history of diabetes?
• What other medical conditions do you have?
• What medications are you are currently taking?
• Have you been ill recently?
• Has growth and development progressed normally (if the person is a child)?