These rashes can occur in a variety of inflammatory and infectious conditions, some of which can be rapidly fatal
Fever
Toxic appearance
Hypotension
Mucosal lesions
Severe pain
Very old or young age
Immunosuppressed
New medication
Erythematous rash
Positive Nikolsky’s sign
Vesiculobullous rashes
Febrile
Dark raised skin lesions
Staphylococcal scalded skin syndrome 
Fever and rash
Toxic epidermal necrolysis/SJS 