Which symptom is commonly associated with rhabdomyolysis?

Which symptom is commonly associated with rhabdomyolysis?

• A. Nausea and vomiting
• B. Myalgias
• C. Dark urine
• D. Fatigue

Answer: (B)

The main idea is that rhabdomyolysis produces obvious injury to skeletal muscle, so the most consistent symptom is muscle pain. When muscle fibers break down, inflammatory mediators and damage stimulate pain and tenderness, and patients often report myalgias and weakness out of proportion to what you’d expect from exam findings. This makes myalgias the most reliable clue across cases. Dark urine due to myoglobin can occur and is a helpful classic sign, but it isn’t present in every patient, especially early on or with adequate hydration. Nausea, vomiting, and fatigue can accompany severe illness but are nonspecific and less predictive for rhabdomyolysis. So, while those can appear, the symptom that most directly and commonly points to rhabdomyolysis is muscle pain.

The main idea is that rhabdomyolysis produces obvious injury to skeletal muscle, so the most consistent symptom is muscle pain. When muscle fibers break down, inflammatory mediators and damage stimulate pain and tenderness, and patients often report myalgias and weakness out of proportion to what you’d expect from exam findings. This makes myalgias the most reliable clue across cases.

Dark urine due to myoglobin can occur and is a helpful classic sign, but it isn’t present in every patient, especially early on or with adequate hydration. Nausea, vomiting, and fatigue can accompany severe illness but are nonspecific and less predictive for rhabdomyolysis. So, while those can appear, the symptom that most directly and commonly points to rhabdomyolysis is muscle pain.