Muscle weakness?: If you have this after sitting in the toilet sheet for some time and feel weak above the knees , few things need may casue it. Check your potassium level as there are some familial consitions with low and high potassium , which are associated with muscle weakness. Similarly get checked for low thyroid function/excess steroid etc. Some muscle related disorders by metabolic imbalances can happen.
Answered 6/19/2018
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Are you...: spending extended periods of time on the toilet? Or are you resting your forearms on your thighs while sitting on the toilet? Those could be causes for your weakness. Other possible causes include myopathies and tendonitis. If it continues then see your doctor.
Answered 1/31/2017
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