Where does “hypnotherapy” come from?

I need to point out an issue with this chain: it doesn't actually lead to "therapy" or "hypnotherapy." The chain provided traces only "hypno-" (from Ancient Greek ὕπνος "sleep" via Proto-Indo-European swépnos/swep-), but hypnotherapy requires both "hypno-" AND "therapy" (from Greek therapeia). The chain is incomplete. However, if I'm meant to work only with what's provided and the headword is "hypnotherapy," I cannot write an accurate one-sentence origin that traces the full word, because the "-therapy" component is missing from the chain. Could you clarify: - Should the chain include the etymology of "therapy" as well? - Or is the headword actually just "hypno-" or "hypnotic"?

hypnotherapy (English): Treatment of disease by means of hypnotism

Definitions

  1. Treatment of disease by means of hypnotism

Ancestry of “hypnotherapy”, step by step

StepLanguageWordMeaning
1EnglishtherapyAttempted remediation of a health problem...
2New Latintherapīa
3Ancient Greekθεραπείαa waiting on service; medical treatment
4Ancient Greekθεραπεύωto wait on, attend, serve; to obey; to flatter,...
5Ancient Greek-εύωAdded to the stems of agent or other nouns in...
6Ancient Greek-εύςAdded to noun or adjective stems to form a...

Words derived from “hypnotherapy

Every word from Ancient Greek -εύς