tvacam asya vinirbhinnam
vivisur dhisnyam osadhih
amsena romabhih kandum
yair asau pratipadyate
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
When there was a separate manifestation of skin, the controlling deities of sensations and their different parts entered into it, and thus the living entities feel itching and happiness due to touch.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
For sense perception there are two principal items, touch and itching, and both of them are controlled by the skin and hairs on the body. According to Sri Visvanatha Cakravarti, the controlling deity of touch is the air passing within the body, and the controlling deity of the hairs on the body is Osadhya. For the skin the object of perception is touch, and for the hairs on the body the object of perception is itching.