Exertional Rhabdo: What to Know

During rhabdomyolysis, damaged muscle cells release substances into the bloodstream. This can cause marked muscle pain, weakness and swelling, and can strain the kidneys. Ordinary Muscle Soreness After Exercise tends to improve with recovery; rhabdo may feel unusually severe, involve swelling or weakness, and may change urine colour or output. Symptoms can begin after unfamiliar high-intensity training, heat exposure or prolonged exertion.

Stop the workout and avoid further strenuous activity. Contact a medical service promptly and describe the exercise, heat exposure, supplements or medicines involved, when symptoms began and any change in urine. Do not try to exercise the pain away or rely on home treatment to judge kidney function. A clinician may examine you and arrange blood and urine tests, then decide whether fluids, observation or hospital treatment are needed.

Go to urgent care or an emergency department for tea-coloured or very dark urine, passing much less urine, severe muscle swelling, worsening weakness, confusion, fainting, chest symptoms or trouble breathing. Severe pain after exertion that feels out of proportion to ordinary soreness also warrants prompt evaluation, even if urine looks normal.

Could my symptoms represent muscle breakdown, and which tests check muscle injury and kidney function? When is it safe to drink normally, return to exercise or repeat training? Could any medicine, supplement, heat exposure or medical condition have increased my risk?