The expected symptoms of<unk>  include fever, pleuritic chest pain, or epigastric abdominal pain that is frequently spasmodic.<unk>  associated chest pain is distinguished by attacks of severe pain in the lower chest, often on the right side. In a prior study, the episodes were shown to last five to ten minutes and then subside for thirty minutes. The pain is exacerbated by movement and makes walking and breathing more difficult. Patients have found relief from the pain by lying still for a brief period of time. The slightest movement of the rib cage causes a sharp increase in pain, which makes it difficult to breathe, although it generally passes off before any actual harm occurs. The attacks are unpredictable and strike "out of the blue" with a feeling like an iron grip around the rib cage. The colloquial names for the disease, such as the devil's grip, (see "other names" below) reflect this symptom.<unk>  is a clinical diagnosis that uses the spasmodic pain, fever, and relapses to distinguish the illness from other potential causes of pain such as appendicitis or myocardial infarction. Tachycardia and arrhythmias have been found with<unk>  by using an electrocardiogram (ECG). Murmurs, rubs, and pericardial effusions have been detected on physical examination. Maculopapular rashes can also be present with<unk>
Bornholm disease
Pulmonary embolism
Freiberg disease
Appendicitis
Haff disease
Pancreatitis
Dent's disease
Cholecystitis