If I get the flu with a bad cough, I start coughing up blood. The capillaries rupture from the frequency and pressure of the coughing. It is disconcerting but the only thing you can do is force yourself to relax. Of course if you start seriously gurgling from your lungs call 911 but I'm just saying IF and that is usually associated with more extreme conditions.
My back hurts in 4 places, shoulder in 3, arm in 2. Both knees hurt, eyes going fuzzy, memory going, hearing going. Get odd pains that show up for no reason and later disappear without notice. At this rate in another year I should be nothing more than a puddle in a wheel chair staring out into space. Not to mention the weird typos of leaving out entire words or suffixes.