Memory-Loss ' An after-effect of Meningitis
The story was Nahar was suffering from Meningitis. However, Varun was giving him medicine to make him ill. The medicine was affecting him simulating the symptoms of Meningitis that is fainting, weakness, un-controllable rage, migraines and paralysis.
One of the after effects most likely to be caused by meningitis:
Memory loss / difficulty retaining information / lack of concentration
http://www.meningitis.org/disease-info/after-effects
Memory problems
Memory problems are a common result of brain damage, because many parts of the brain are concerned with storing and processing different kinds of information. The effect of memory loss can vary. Many people experience short-term memory loss, or find it hard to concentrate following meningitis.
http://www.meningitis-trust.org/Other%20after-effects.html
Nahar was given medicine for at least one month before his disappearance ' Did the medicine have an after effect?
SP often used ironies in its story-line