Early symptoms of a gallbladder attack include vomiting and persistent nausea. Patients with gallbladder diseases may vomit after meals. Vomiting may provide relief for the patient, as it helps get rid of the gas pressure and stomach discomfort. Sometimes a mild fever accompanies nausea. Other than after large, fatty meals, nausea usually occurs at night. It may be due to increased pressure on the affected area in certain sleeping positions.
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