medically, (from) a medical standpoint

to resign, to quit

a reason / a motive

余儀無い: unavoidable, inevitable

inevitable to, be forced to

the above / the top (position or direction) / the surface of / superior in skill, age, level, etc.

in addition; furthermore / on top of (which)

a sport; sports

medicine (field of study)

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend