Type 1 diabetes is autoimmune beta-cell destruction causing absolute insulin deficiency. Clients always require insulin and face DKA risk during illness, missed doses, or pump failure. Connect Type 1 Diabetes to bedside cues you will reassess first: vitals trends, work of breathing, perfusion, mentation, and pain or ischemic equivalents when relevant. NCLEX items often reward recognizing when subtle instability outweighs reassurance, then selecting nursing actions that protect airway, circulation, and neurologic status before routine tasks.