With our "No pastoral advice" policy, we usually see these kinds of questions quickly, close them, and urge the user to find help in the real world from a real and trusted spiritual adviser. I greatly applaud our steadfast holding to this policy.
Not wanting to tromp on this wise and sound policy, I have a concern.
Recently, we've received a few questions that may indicate the asker is suffering from a medical condition. In this particular example, the asker claims to see and hear dead people and is not necessarily concerned with the fact that they may be hallucinations and not real, and much more so concerned with whether this is okay for a Christian to engage in. Hence, they asked a pastoral advice question. But I shudder at the suggestion that we'd send them to a pastor when they may very well need a doctor!
In light of obvious medical implications, I believe we should strongly urge the asker to see a doctor first, then a spiritual adviser. The possibility of real medical conditions seem to me to be a far more immediate issue for the safety and health of the asker.
And of course, we are not doctors! Therefore, the advice ends with "Go see a doctor."