Translation of "to chafe" into Spanish

Soph, it's lovely, your incessant rubbing of my back, but it is starting to chafe.

Soph, me encanta tu incesante refriega de mi espalda Pero me empieza a escocer

And sons continue to chafe against what they perceive as their fathers'expectations of them.

Y los hijos se irritan a causa de las expectativas de sus padres.