Dream about scary ghost is an indication for your ideologies and beliefs. You are keeping your temper in check. You can no longer continue on in the same course and must make drastic changes. It represents decisiveness and control in your life. You need to take a more relaxed approach to some situation.
Scary ghost dream is a clue for your desire to challenge authority. You need to pay more attention to your surroundings. You are facing some deep issues or dealing with some repressed thoughts. It indicates your concerns about your appearance. You or someone else is using their position of power to do harm.
If you dreamt about scary ghost:
Expect to spend a lot of time in the company of others, perhaps running from one social event to another. At least one could end up being helpful to your professional life. A lot of stimulating conversation could take place today, perhaps giving you clues to opportunities or trends that you want to follow. Relations with others should be jovial, congenial, and supportive.