Charak Samhita
प्राणोदकान्नवाहीनि स्रोतांसि सकफोऽनिलः । हिक्का करोति संरुध्य तासां लिङ्गं पृथक् शृणु ॥२१॥
॥ Specific pathogenesis of hikka॥ Vishesha samprapti: Vata along with kapha blocks the channels carrying prana, udaka and anna and produces hikka. A List of the signs and symptoms of many types is elaborated further:
english translation
prANodakAnnavAhIni srotAMsi sakapho'nilaH । hikkA karoti saMrudhya tAsAM liGgaM pRthak zRNu ॥21॥
hk transliteration by Sanscript