Hi I played some Dark Heresy about 1 years ago and is about to continue where we left off after completing their first mission, I am the GM and I have not read the book in a while now but I remember reading about it both in the wiki of the Inqusition and in the core rule book 1st edition that once a mission is over the acolytes(PCs) are being searched for corruption and potentially mind-cleansed from the horrors of the warp.

What does this mean rule-term?
If they have some corruption points but not enough for anything to happen yet does it still get detected?
And are they really being mind cleansed which one of the group which read much more WH 40k stuff than me insist should happen? Because mind cleansing seem rather extreme and give away side effects when you read about it on the WH 40k wiki.

This is just something that has been bugging me since they mention it in the core rulebook I am fairly certain but there is nothing about what it really means rule-term or for the players.

Thanks for any answer that may be coming!

Nothing, as much as you want it to mean.

Depends on if they have a noticeable malignancy. There isn't much psychology in the 41st millenium, but that might be interesting if you think you could pull of a shrink talking with the acolyte(s) individually or as a group.

They can be mind cleansed if you want them to be, don't do what fluff readers insist you should do. It's your interpretation of the universe, run it how you please.

Thanks for the answer!

I just wanted to know if there were anyone else who had the problem or how they deal with this sort of thing, been thinking that it has to be when they get any noticable malignacy or mutation, will just do it that way then.

I think I rather just do that in case that is really needed, the side effects of such an action is a bit extreme for just one mission.

Just depends on the kind of inquisitor they serve. If they're more radical then they won't care, more purtanical they will in which case you should have them try and hide the mark or burn a fate to have it forcibly removed or something.

It's all how you want to handle it, or not at all. Not all interpretations of inquisitorial work are so stringent. If you're trying to get into the universe read Eisenhorn and Ravenor (both are omnibuses about inquisitorial work) Eisenhorn is more Inquisitor centric, and ravenor is more Inquisitorial team centric. Both have good shows of what inquisitorial work would generally entail and shows that inquisitors and acolytes are just people dealing with weird stuff in the galaxy.

I'd say offer it to the acolytes if they want their character to forget what they've seen. Some may want to.