Charak Samhita
मार्गैर्गात्राणिसन्धावन्नूर्ध्वंमूर्ध्निविहन्यते। ग्रीवांमन्येचगृह्णातिशिरःकण्ठंभिनत्तिच॥४४॥
Avarita dosha (covered/ obstructed dosha) will further vitiate the agitated vata by niruha basti. Vitiated vata will run in all directions in the body, especially upward and affect the head.
english translation
mArgairgAtrANisandhAvannUrdhvaMmUrdhnivihanyate। grIvAMmanyecagRhNAtiziraHkaNThaMbhinattica॥44॥
hk transliteration by Sanscript