Introversion can affect every bit of a person's life, from the way they dress to their grooming habits to the way they interact with other people, and it can make an introvert feel like they're physically different than extroverts.
But introversion and extroversion are all in our heads, and every extrovert who acts like they're so much better than the shy introvert is hiding a dark secret- they're just a meatsack full of muscles, blood and bones, just like everyone else... (Comic by Pain Train Comics)
-Via Geeks Are Sexy