Slender man soalan I need answered.

Slender: A dare maybe?
Slender Sanatorium: Magic?
Hospice: Trying to change things up a bit>
Elementary: Probably night
Mansion: Extreme paranoia, nausea, blood noses, coughing, amnesia. These are usually the symptoms seen in the vlogs.
Claustrophobia: Probably can't get into the bushes, and even if anda could, Slenderman would find anda anyway.

Slender; anda saw a piece of Kandi on the other side.

Slender Sanatorium;There IS a door, Slender's just trying to make sure anda don't find it. (or it's invisible :p)

Hospice;They're trying to make anda feel hopeless.

Elementary;You're stuck in a time freeze, so who knows.

Mansion;Nausea, hearing your hati, tengah-tengah pounding, riniging in the ears
Claustrophobia;The bushes are actually man-eating monsters, and HOPEFULLY anda know a lot better than to go in those things!

I can answer the "Slender Sickness" question. Slender Sickness came from the popular Slenderman ARG Marble Hornets. It consisted of coughing and wheezing. It mostly happened to people who were near him and Proxies. Most other ARG's try to copy this atau lack it. In Marble Hornets, the apparent cure for it is strange, rare, unnamed pills in unmarked bottles. Hope this helped anda understand Slender Sickness a little more.