Depending upon the context of your dream to see scorpion in dream symbolizes an enemy who is jealous and always criticize people. Scorpion in dream is often symbolic of a mean and weak enemy or opponent who is in habit of teasing people. Usually he is harmful to all i.e. friends or foes.
To stung by a scorpion in dream signifies some badmouthing that will be grieve you. To dream that you hold a scorpion in your hand may signify your avoidance from people, your bad mouthing and your treachery to the people. To see a scorpion in your pants signifies illicit relationship of your spouse or family member with your opponents or rivals.