Critical Seriousness - Allergic Reaction causing Inflammation of Blood Vessels - Hypersensitivity Angiitis is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Bleeding of the Stomach or Intestines - Gastrointestinal Hemorrhage is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Deficiency of Granulocytes a Type of White Blood Cell - Agranulocytosis is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Discolored Spots and Small Elevations of the Skin - Maculopapular Rash is a Life Threatening Side Effect of Spironolactone Critical Seriousness - High Amount of Potassium in the Blood - Hyperkalemia is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Hives - Urticaria is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Inflammation of Skin caused by an Allergy - Allergic Dermatitis is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Inflammation of the Liver with Stoppage of Bile Flow - Cholestatic Hepatitis is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Itching - Pruritus of Skin is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Kidney Disease - Renal Disease is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Life Threatening Allergic Reaction - Anaphylaxis is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Rash - Skin Rash is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Reaction due to an Allergy - Allergic Reactions is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Stomach Ulcer - Gastric Ulcer is a Life Threatening Side Effect of Spironolactone Critical Seriousness - Trouble Breathing - Dyspnea is a Life Threatening Side Effect of Spironolactone |