Screams you hear or emit during a dream indicate danger. Usually, they refer to the close presence of any threats or anything that would compromise your security (either physical or emotional). In general, when you scream you release a strong inner tension. This dream may be a warning that you are in an extreme situation because of pressures of any kind.
[1]Warning dream. Desperation, but also experiencing and waking, as opposed to the image of Sleep.
[2]It is considered a fortunate sign to find yourself screaming in a dream.
[3]Implies a traumatic experience has not been resolved
[4]