“…Findings not classically associated with BACM include myoglobinuria, recent trauma or vigorous exercise, a family history of neuromuscular disorders, a sub-acute or chronic progression, a new rash, or any frank muscle weakness or abnormal neurological findings. When such atypical features are present, an alternative disorder such as rhabdomyolysis, GuillainBarré syndrome, dermatomyositis, polymyositis, or muscular dystrophy must be considered (12)(13)(14)(15). Consideration and exclusion of these other conditions is critical during both the evaluation and disposition of the pediatric patient with lower extremity muscle pain and possible weakness (Table 2).…”