The different shapes of temperature curves formed when the body temperature of a febrile patient is measured routinely and labeled on a temperature sheet are known as thermotypes. Heat pattern is one of the manifestations of the interaction between pathogenic factors and the organism, and many febrile illnesses have a relatively specific heat pattern, so the typical heat pattern is very valuable for the diagnosis of the disease. The pre-morbid health condition is poor, most of them are accompanied by primary diseases that affect the body’s defense function, and more of them are hospital-acquired infections. Chills, high fever, profuse sweating, and bimodal fever are more common, and occasionally triphasic fever, which is rare in sepsis caused by other organisms, is worth paying attention to. What is the diagnosis of triple-peak fever? Since the pathogenicity testing methods and their diagnostic value are still in the development and validation stage, there is a lack of mature laboratory diagnostic methods with good specificity, sensitivity and early diagnostic significance. Severe acute respiratory syndrome should be diagnosed on the basis of epidemiologic history, clinical manifestations, preliminary laboratory tests and diagnostic treatments, etc., and the following diagnostic criteria were issued by the Ministry of Health of China in May 2003 The following are the diagnostic criteria for severe acute respiratory syndrome issued by the Ministry of Health of China in May 2003 Symptoms and signs: acute onset, fever as the first symptom, body temperature is generally higher than 38 ℃, occasionally chills; may be accompanied by headache, joint pain, muscle pain, fatigue, diarrhea; often no upper respiratory symptoms; there may be a cough, most of which is dry, with little sputum, and occasional blood sputum; there may be tightness in the chest, and in severe cases, there is accelerated respiration, shortness of breath, or obvious respiratory distress, lung signs are not obvious, and some patients may hear a few wet rales, or there may be pulmonary solidity. Some patients may hear a few wet rales, or have signs of pulmonary solid lesions, and a few patients do not have fever as the first symptom. Cases with suspected diagnosis: The above diagnostic bases (1)(2)(3), or (2)(3)(4), or (2)(3)(4) are met. Clinically diagnosed cases: meets (1)(2)(4) and above, or 2)(2)(3)(4), or 2)(2)(4)(5) above. Severe Severe Acute Respiratory Syndrome: Severe Severe Acute Respiratory Syndrome is diagnosed by meeting one of the following criteria. Dyspnea, respiratory rate >30 breaths/min; hypoxemia, arterial partial pressure of oxygen (Pa02) <70mmHg or arterial oxygen saturation (Sp02) <93% under oxygen intake of 3-5L/min; or acute lung injury (ALI) or acute respiratory distress syndrome (ARDS) can be diagnosed; multilobar lesions with more than one third of the extent of the lesions or X-ray chest radiography showing >50% progression of the lesion within 48h; shock or multiple organ dysfunction syndrome (MODS); with severe underlying disease, or comorbidities with other infectious diseases, or age >50 years.