1. Consult physician for medical checkup to find out the cause of tremors.
2. Measure latest BP (If high beyond a normal acceptable range, extraction is usually not advised)
3. Local Anaesthesia is required for extraction and rootcanal - Before proceeding proper and latest medical history needs to be provided, particularly of any drug allergy.
Next Steps
Consult physician, you can consult me online for thorough explanation, for dental treatment visit nearby dentist.