Answer:
The Plague or Black Death symptoms were:
Fever
Fatigue
Headache
Gangrene (death of the tissues)
Abdominal pain associated with vomiting and diarrhea
Bleeding from
Swollen lymph nodes (buboes)
Doctors were not qualified to treat patients with the Plague infectious disease. In consequence, people incurred in the following practices:
Eating minerals such as arsenic
Drinking vinegar
Bloodletting
Applying herbs directly on the skin
Standing next to a fire to force out the fever
Cutting pigeons and or snake open and brushing them on the patient's skin
Burning herbs to purify the air