The Compendium of Caraka 3.5.8_13

3.5.8_13

svedavahānāṃ srotasāṃ medo mūlaṃ lomakūpāśca, praduṣṭānāṃ tu khalveṣāmidaṃ viśeṣavijñānaṃ bhavati; tadyathā---asvedanamatisvedanaṃ pāruṣyamatiślakṣṇatāmaṅgasya paridāhaṃ lomaharśaṃ ca dṛṣṭvā svedavahānyasya srotāṃsi praduṣṭānīti vidyāt//

Fat and the hair follicles are the root of the channels carrying sweat, and when these are vitiated, this is their specific diagnostic knowledge; namely: seeing absence of sweating, excessive sweating, roughness, excessive smoothness of the body, burning sensation, and goose bumps, one should know that his channels carrying sweat are vitiated.