Fainting in a dream signifies a feeling of losing control over oneself. It also symbolizes that the person is unable to handle the current situation and it feels like there is an impending disaster.
In one’s dream, for example – their body is heavy and their breathing becomes difficult so they are not able to move. This could signify that they feel under pressure from work, family or school. This could also signify that they are afraid of some sort of danger or being ill.
Fainting in a dream can mean that someone is feeling overwhelmed by their responsibilities or by how much work they have to do. It could also signify something or someone from the past has come back to haunt them, or that they are feeling guilty about something they did wrong.