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so that, in most cases, it may be similar to that of a heart attack |
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which typically extends to the left shoulder and sometimes down the left arm |
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just as it tends to be made worse by lying down, coughing, or even deep breathing |
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while it has many causes, ranging from viral infections to life-threatening cancer |
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but it may result as a side effect of certain drugs, such as anticoagulants and penicillin |