most helpful answer sweet's syndrome (also called sweet syndrome and known medically as "acute febrile neutrophilic dermatosis") is a rare skin condition in which a painful bluish-red rash appears usually on just one side of the body along with a fever. most of the time sweet's appears on its own with no known cause. about 2 out of 10 cases may be related to a serious underlying disorder like cancer. the rash of sweet syndrome evolves in a very predictable fashion. it usually starts on the arms back neck or face. the initial bumps are small and red and occur after a fever or upper respiratory infection. this rash quickly grows into clusters of bumps that may measure an inch in diameter. the bumps almost always are painful and may develop blisters. these lesions may clear up on their own but it can take months for this to happen. if you develop this type of rash after a fever or upper respiratory infection you'd be well-advised to consult a doctor. with appropriate treatment the rash of sweet syndrome may clear up within days. i hope this answers your question!
does anyone out there know what sweets syndrome is?