What should I do if I have fever, body weakness, cough, nasal congestion and difficulty in breathing?

Patients with fever, malaise, cough, nasal congestion, and dyspnea should have laboratory tests (e.g., routine blood tests) and be treated with general therapies such as rest, fluids, and medications (e.g., acetaminophen).
Patients with fever, weakness, cough, nasal congestion and dyspnea are most often considered to have a cold, which is mainly caused by infections such as rhinovirus, coronavirus and parainfluenza virus.
General treatment: pay attention to rest, maintain nutrition and water-electrolyte balance, eat a light and easy-to-digest diet, eat more fresh fruits and vegetables, pay attention to indoor ventilation and disinfection, active physical cooling, and pay attention to the observation of complications, etc., which generally can effectively relieve cold symptoms.
Medications: Compound aminophenolamine, antiviral granules, cold and flu granules, etc. can reduce symptoms and shorten the duration of the disease. Antibiotics (e.g. amoxicillin, roxithromycin, etc.) can be used to control infection in patients with bacterial infection.
If the symptoms such as fever, weakness, cough, nasal congestion and difficulty in breathing do not improve or become more serious, it is recommended to go to a regular hospital for treatment to avoid delaying the condition. The above drugs need to be used under the guidance of a physician.