Simply put, internal medicine is treated with drugs, and surgery is the main method (some minor problems such as acupuncture and finger scratches are also surgery). But this is not absolute. For example, what cardiology does is actually minimally invasive surgery.

See internal medicine as usual, cold, fever, stomachache, abdominal distension, lumbago, poor spirit, constipation, headache, rheumatism and so on. Broken skin, broken bones, cosmetic surgery, burns, heart disease, cerebral infarction and so on.

If you don't know, just hang a number and the doctor will make it clear to you. Ask me too.