yeah, that's because their illness suddenly recover.
like some guys if injured their legs (very common, overused
chao-keng excuse) quite seriously, they will get E, but after
recover, MO will upgrade them again.
as for as i know, eczema can never be fully cured and even if
it's stable for a while, when the conditions are there, the eczema
will rise again, so how can MO possibly give him A or B? maybe C at
the most if really unlucky.
also, even if given C, it's dangerous, because PES C people
still need to sweat / take part in those rugged activities, and
this may make the eczema active.
