The Sickness, sometimes called Slender Sickness, is the name given to an apparent sickness consisting mostly of coughing fits and coughing up blood, along with occasional nausea, paranoia, vomitting, and extreme exhaustion due to an encounter and being stalked by the Slender Man. Many have also had bloody noses, fever, and sometimes amnesia. It is experienced mostly by those stalked by Slender Man.
The illness is mostly mistaken by many people who suffer the symptoms.
NOTE: If you have these symptoms, instead of yapping about it to me and freaking out, see a doctor. Many of these symptoms apply to non-Slender Man related illnesses, and exposures to certain chemicals, some of which are serious. If you really have these symptoms, seek medical help.
I am not a doctor. I cannot diagnose you.
On another note, if you are a hypochondriac , I would not recommend reading this, but you may do so if you think you can handle reading the article without suffering from increased anxiety, or jumping to the conclusion that you have it.
Cause
One theory is that the sickness is directly caused by Sigma Radiation, or radiation in general, which has a long history of inclusion in theories regarding Slender Man and its powers. This may mean the sickness is a form of radiation poisoning. However, many symptoms are also similar to symptoms of various chemicals entering the body system.
Symptoms
Stalked:
Nose bleeds with fever like the common cold, mild amnesia
First Encounter:
Nose bleeds, exhaustion, nausea, strong cough, vomiting, amnesia, slight signs of radiation poisoning, aches and pains, slight trauma of the eyes (i.e. blood shot, vesial popping etc...), deja vu is commonly seen at this point.
More than five (5) sightings:
Coughing up blood, blood in vomit, many signs of radiation exposure, painful breathing, difficulty in swallowing, violent convulsions and major amnesia.
(NOTE: If you have these symptoms, instead of yapping about it to me and freaking out, see a doctor. Many of these symptoms apply to non-Slender Man related illnesses, and exposures to certain chemicals, some of which are serious. If you really have these symptoms, seek medical help.
I am not a doctor. I cannot diagnose you.)
Further Notes:
I do not wish to hear anybody diagnose themselves in the comments with any of the symptoms. If you do have any, seek a doctor and perhaps a psychiatrist.
