Side effects and risk factors associated with a morphine pump include cerebrospinal fluid leak, recurrence or continuation of pain, bleeding or injury to blood vessels, infections and complications caused by anesthesia, according to University of Rochester Medicine. A more rare side effect is pain, numbness, weakness or paralysis due to nerve damage.
More than 20 side effects are associated with taking morphine, including cramps, difficulty having a bowel movement, drowsiness, weight loss and an unusual sense of well-being, states Drugs.com. Additional side effects are dizziness, fainting, headaches and a fast, pounding or irregular heartbeat or pulse. Specific symptoms associated with a morphine overdose include constricted, pinpoint or small pupils, decreased awareness or responsiveness, extreme fatigue, fever and muscle cramps, or spasms. If taking morphine and any of these symptoms develop, it is important to seek emergency medical help. Other overdose symptoms to watch for are no muscle tone or movement, swelling of the face, fingers or lower legs, and increased thirst.
Certain side effects caused by morphine do not require medical attention. The body adjusts to the medicine during treatment, and many symptoms leave after the body acclimates, explains Drugs.com. A health care provider is able to explain methods for reducing or preventing side effects caused by morphine.