Retrospective chart review to determine the presence of rhabdomyolysis among patients admitted to CHMCA from 1997-2007 with Jimsonweed ingestions and to define possible risk factors predisposing patients to the developement of Jimsonweed-associated rhabdomyolysis.

Inclusion Criteria:

• admitted to CHMCA between 1/1/1997 to 12/31/2007 with a qualifying ICD-9 diagnosis code for rhabdomyolysis, myoglobinuria, and hemoglobinuria (728.88, 791.2, 791.3)or other ICD-9 codes identified during the study
• between the ages of 0-21 years at diagnosis

Exclusion Criteria:

• rhabdomyolysis or serum CK concentrations not actually documented
• patient admitted to the burn center
• patient > 21 years of age

Patients diagnosed with rhabdomyolysis/ myoglobinuria/ hemoglobinuria (in-patient, out-patient, ER visit) at a CHMCA facility