B) Specific therapy
If you are feeling unwell, visit your doctor and do not self-medicate at home. If you are living somewhere where medications are easily accessible, do not try to self-medicate with antibiotics or other drugs as they can have severe side effects and may not help in your condition. Your doctor will order the necessary investigations and will prescribe the best treatment for your condition. If you do have a bacterial infection and you blindly take antibiotics, this can affect culture results and can give bacteria another antibiotic to be resistant to.
Viral infections don’t need specific drugs except in a few cases when the infection is severe. Autoimmune disorders need immunosuppressive drugs which if given to a patient with an underlying infection can worsen the condition. Such considerations can never be done at home and need various investigations and monitoring.