Onset is acute.
The visceral and the internal surfaces of parietal pericardium are insensitive to pain ordinarily. The pain in pericarditis is usually due to associated pleuritis and inflammation of part of pericardium supplied by phrenic nerve. This pain is often reduced when the patient sits up or leans forwards. In cases of uraemia, malignant involvement of pericardium, myocardial infarction and myxodema, pain may be absent.ACUTE DRY PERICARDITIS
SINGS:
Temperature may be raised in infectious cases. Pulse shows tachycardia. Sometimes pericardial rub may be palpable. On auscultation over the heart pericardial friction sound may be audible which is the diagnostic sign of this condition. Characteristic features of this friction sound are:ACUTE DRY PERICARDITIS
INVESTIGATIONS:ACUTE DRY PERICARDITIS
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