Allergic reaction/urticaria<unk> 
Angioedema
Anxiety attack
Asthma exacerbation
Carcinoid syndrome
Cold urticaria
Contrast induced allergic reaction
Scombroid
Shock
Transfusion reaction
Cardiogenic
Acute valvular Regurgitation/VSD
CHF
Dysrhythmia
ACS
Myocardial Contusion
Myocarditis
Drug toxicity (e.g. beta blocker, CCB, or bupropion OD)
Obstructive
Air embolism
Aortic Stenosis
Cardiac Tamponade
PE
Tension pneumothorax
Distributive
Adrenal crisis<unk> 
Neurogenic shock
Sepsis
Toxicologic
Hypovolemic
Severe dehydration
Hemorrhagic shock (traumatic and non-traumatic)
Acute valvular Regurgitation/VSD
CHF
Dysrhythmia
ACS
Myocardial Contusion
Myocarditis
Drug toxicity (e.g. beta blocker, CCB, or bupropion OD)
Air embolism
Aortic Stenosis
Cardiac Tamponade
PE
Tension pneumothorax
Adrenal crisis<unk> 
Neurogenic shock
Sepsis
Toxicologic
Severe dehydration
Hemorrhagic shock (traumatic and non-traumatic)
Positive Nikolsky’s sign
Febrile
Staphylococcal scalded skin syndrome (children)
Toxic epidermal necrolysis/SJS (adults)
Afebrile
Toxic epidermal necrolysis
Negative Nikolsky’s sign
Febrile
Toxic shock syndrome
Kawasaki disease
Scarlet fever
DRESS syndrome
Cellulitis
Acute generalized exanthematous pustulosis
Afebrile<unk> 
Scombroid
Alcohol intoxication
Exfoliative erythroderma
Cellulitis
Drug rash
Erythema multiforme
Dermatitis (eczema)
Febrile
Staphylococcal scalded skin syndrome (children)
Toxic epidermal necrolysis/SJS (adults)
Afebrile
Toxic epidermal necrolysis
Staphylococcal scalded skin syndrome (children)
Toxic epidermal necrolysis/SJS (adults)
Toxic epidermal necrolysis
Febrile
Toxic shock syndrome
Kawasaki disease
Scarlet fever
DRESS syndrome
Cellulitis
Acute generalized exanthematous pustulosis
Afebrile<unk> 
Scombroid
Alcohol intoxication
Exfoliative erythroderma
Cellulitis
Drug rash
Erythema multiforme
Dermatitis (eczema)
Toxic shock syndrome
Kawasaki disease
Scarlet fever
DRESS syndrome
Cellulitis
Acute generalized exanthematous pustulosis<unk> 
Scombroid
Alcohol intoxication
Exfoliative erythroderma
Cellulitis
Drug rash
Erythema multiforme
Dermatitis (eczema)
Anaphylaxis
Allergic reaction/urticaria
Heat tetany
Laryngospasm
Angioedema
Cold urticaria
Anxiety attack
Flash pulmonary edema