A Muslim believes an illness is a test of faith and therefore we should be patient.
We also believe it is a form of punishment, it is better to suffer here on Earth, than to be burnt in Hell. (Penghapus dosa)
(FYI, berwudhu' is another form of 'penghapus dosa')
Many Europeans believe an illness is a some kind of punishment from God. You are sick because you are bad.
However, many indigenous Africans believe you are ill because of the consequence of a witchcraft. You are casted under a spell to fall sick because someone is jealous of you. Someone is jealous because you were too good, most probably posed as a threat to that someone.
You fall sick because you are a bad.
And you fall sick because you are good.
10 hours ago