Islamic Interpretation of Dreams (Ibn-i Sirin):

(Call; Cry; Human call; Outcry; Shout; Scream) Shouting at a gathering of people in a dream means winning the title of a statesman, authority and power in an election, or presiding over people.

Ifone sees himselfshouting alone in a dream, it means that he will lose his power and his words will have impact.

Shouting in a dream also denotes social turmoil, agitation caused by war, an earthquake, the drowning of a ship, or the spread of a new disease that will force people to turn to God Almighty for help.

(Also see Calling someone)