Ah, that explains why you think popular definitions are somehow scientific.

There's no scientific definition of alternative medicine, it's not a real category.

If your definition is that something can be called "alternative medicine" simply because we have no proof if it works or not, my magic stick that heals all wounds is alternative medicine.

What? There are no studies proving it doesn't work... and no, I won't let you touch it. But it's alternative medicine!

Once something works, we call it medicine. There's no such thing as "alternative medicine".

Even if it's weird, or comes from popular knowledge, or disrupts the profits of a pharmaceutical company - if it's proven to work, it's medicine.

Modern doctors are using fish skin to combat burns, maggots against necrosis, electroshock therapy for depression.

The things that need the "alternative" qualifier before the word "medicine" are the ones that do nothing but extract your money.