Pediatric endocrine emergencies are acute, life-threatening conditions that require immediate medical attention. This master's thesis describes DKA, thyroid storm and adrenal crisis. Recognizing their clinical manifestation, understanding the underlying pathophysiological mechanisms and treatment is essential to improve patient outcomes. DKA is a severe complication of diabetes, primarily DMI, characterized by hyperglycemia, ketosis, and metabolic acidosis. It presents with symptoms such as polyuria, polydipsia, abdominal pain, vomiting, dehydration, altered mental status, and clinical signs such as tachycardia, Kussmaul breathing, and acetone-smelling breath. Insulin deficiency, which triggers the pathophysiology of DKA, leads to hyperglycemia, fat breakdown, ketone formation, and acidosis. The main therapeutic measures in the treatment of DKA are rehydration, insulin therapy and replacement of electrolytes, especially potassium. Thyroid storm is a rare and dangerous exacerbation of hyperthyroidism, and is presented by hyperthermia, fever, tachycardia, hypertension, agitation, delirium, diarrhea and vomiting. Excessive thyroid hormone levels lead to increased metabolic rate and adrenergic activity, and precipitating factors include infection, surgery, or discontinuation of antithyroid medication. In treatment, beta-blockers are used to control adrenergic symptoms along with antithyroid drugs. Supportive measures include fluid replacement, antipyresis and treatment of precipitating causes. Adrenal crisis is an acute adrenal insufficiency. The most common symptoms and signs are weakness, abdominal pain, nausea, vomiting, hypotension, hypoglycemia, confusion, dehydration and hyperpigmentation (in chronic adrenal insufficiency). Triggers may include infection, trauma, or sudden discontinuation of corticosteroid therapy. Immediate administration of intravenous hydrocortisone and replacement of fluids and electrolytes are fundamental therapeutic steps.