What does it mean when a spider crawls on you in a dream?

Answer 1

In dreams, Spiders usually symbolize something unpleasant, frightening or threatening. You normally would want to get the spider off yourself as quickly as possible. So this dream suggests that you have a potentially threatening problem that is very close to you, perhaps even something such as an illness. It brings to mind a brown mole or other skin problem that should be checked by a doctor.

Answer 2

It only means that something in your bed or nightclothes was tickling you during your sleep. Your sleeping mind turned that physical sensation into irritating dream images.