The Compendium of Caraka 6.17.33

6.17.33

paryādhmātasya hikkā yā jatrumūlādasantatā/
sā vyapeteti vijñeyā hikkā prāṇoparodhinī//
iti vyapetā hikkā/
kṣudravāto yadā koṣṭhādvyāyāmaparighaṭṭitaḥ/
kaṇṭhe prapadyate hikkāṃ tadākṣudrāṃ karoti saḥ//

and with a bloated abdomen, the hiccup that rises intermittently from the root of the collarbone
should be known as vyapetā hiccup, obstructive of life.
Thus ends [the description of] vyapetā hikkā.
When the minor vāta, agitated by exercise from the gut,
reaches the throat, it then produces the 'minor' (kṣudrā) hiccup.