Wig
To dream that you are wearing a wig symbolizes deception, incompetence, false impressions, pretentiousness and falsehood. You are trying to pass other people's ideas, work and opinions as your own. You need to start thinking for yourself. Alternatively, the dream may be a metaphor that you are "wigging out" or making a big deal over some trivial matter.
To dream that you lose a wig indicates that you have completely lost your mind.