A Remedy That Added Heat to an Injury
A severe burn is not just a sore patch of skin. Heat damages cells, and the injury can extend beyond the visibly reddened surface. Applying a hot, boiled onion could not undo that damage. If it was still hot when placed on the burn, it could add further heat to already injured tissue—and make the patient hurt more.
The onion’s warmth, softness, or strong smell might have made it seem like an active treatment. But a substance that feels potent is not necessarily healing the injury. In this case, the treatment offered no medical benefit.
Why a Prescription Could Still Be Wrong
For much of medical history, doctors worked without today’s understanding of tissue damage and wound care. A remedy could be prescribed because it fit accepted practice or seemed plausible, even when it did not help. The fact that a doctor recommended something tells us what was considered treatment; it does not prove that the treatment worked.
The boiled onion is a memorable example of that gap. For someone with a severe burn, the difference was immediate: instead of relief or healing, there was more pain—and the smell of soup.
