Soreness and weakness and feeling cold may be caused by infectious diseases, heat stroke, hypothyroidism and other diseases, which need to be combined with the patient’s concomitant symptoms and further examination to confirm the diagnosis. 1. Infectious diseases: such as influenza, pneumonia, encephalitis, etc., headache, weakness, generalized body aches and pains, fever, fear of cold and other symptoms, the symptoms of fear of cold, may be the rise of body temperature, you can measure the body temperature, the germs that cause infectious diseases include bacteria, viruses, mycoplasma, and so on. The type of infection can be clarified before treatment. 2. Heatstroke: The above symptoms may also occur when symptoms such as high fever occur after heatstroke. 3. Hypothyroidism: It is caused by decreased secretion of the thyroid gland, and may present with symptoms such as weight gain, fear of cold, weakness, etc. Thyroid function can be checked to confirm the diagnosis. When the symptoms of body aches, weakness and coldness occur, it is necessary to go to the hospital for further examination and diagnosis, to clarify the cause of the disease and then targeted treatment.