In the real world.
A man, 45 years of age and weighing 70 kg, walks out of a textbook and into your practice. He complains of central chest pain radiating down his left arm and nausea. An ECG shows ST elevation. You treat his pain, give him aspirin and oxygen and call an ambulance. This type of presentation may only happen occasionally in general practice. However, undifferentiated illness is more common. Just how common is difficult to quantify as undifferentiated illness is, by its nature, undifferentiated.
O'Connor
Kath
K
D003695:Delivery of Health Care; D003937:Diagnosis, Differential; D006801:Humans; D011643:Publishing