A variant forms techous, tetchious
1 Physically or painfully sensitive.
1990 Cavender Folk Medical Lex 33 = painfully sensitive to movement or touch. “This toe is so touchous I can hardly walk.” 1994 Montgomery Coll. (Cardwell, Ogle).
2 Emotionally sensitive, irritable, easily upset or offended.
1913 Kephart Our Sthn High 294 A choleric or fretful person is tetchious. 1936 LAMSAS (Madison Co NC, Swain Co NC). 1966 Dykeman Far Family 202 We won’t mention anything to the others about Nye Blankenship having been in prison. He might be touchous about it. 1972-73 Pederson et al. LAGS (Cocke Co TN, Jefferson Co TN, Sevier Co TN) 1974 Fink Bits Mt Speech 26 She’s powerful tetchous these days. 1990 Cavender Folk Medical Lex 33 = [having] an irritable disposition. “She gets so touchous when you talk about politics.” 1994 Montgomery Coll. (Cardwell, Ogle). 1998 Hyde My Home 46 If a person was highly fretful, the word to describe that person was “tetchious”, probably from “toucheous,” meaning not wanting to be touched.
[OED touchous adj dialect in Irel, nEngle, Amer; Web3 < touch n chiefly dialect; DARE South Midland]
1987 Wilson Coll. You don’t have to be so toucheous and independent. You ought to always listen to someone who’s been down that road before. 2019 Pressley Coll. She’s so toucheous you can barely stand to be in the same room with her. I hope she gets over this or none of us will ever have any peace.