Let's first clear up a few confusing
statements in your question:
1. Nobody can become crazy
because of too much studying. Rather, one
can become mentally tired or exhausted
because of too much studying; but not
crazy. Possible reason(s) for “becoming
crazy or mad” are either organic in
nature (brain damage) or unknown
(idiopathic). Madness due to brain damage
is called psycho-organic syndrome. Madness
due to idiopathic reasons is called
psychosis. Psychoses are probably
genetically conditioned. Psychoses include
schizophrenia, bipolar disorder, paranoia,
paranoid conditions, etc.
2. A shot or injection that will
prevent someone from becoming crazy does
not exist! There are medications that
exist for treating, but not for
preventing, madness. For example,
anti-psychotics, antidepressants, and
anxiolitics are medicines used for
treating “madness” and
“craziness”.
Cerebral atrophy is not a specific brain
disease but only a pathologic term for
organic damage of the brain. During this
condition, the brain (especially the
cortex) decreases its dimensions
(atrophy). Brain atrophy causes disorders
in all 3 main brain functions: sensory
perception (senses), motor movement, and
cognitive perception(emotions, memory,
thinking, intelligence). Cerebral atrophy
can be seen on a CT-scan.
You should consult a neurologist and
psychiatrist if you'd like a clear
diagnosis and more information on
treatment options, when necessary.
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