Diarrhea 
To dream that you have diarrhea indicates that you have lost authority over some aspect of your life or emotions. This dream could also suggest that you need to get rid of bad feelings from your system as soon as possible. You may not have dealt with a circumstance enough or you are avoiding the situation altogether.
Please see also Bowel Movement.
Hangover
To dream of having a hangover indicates self-delusion in your waking life. Too much may be happening at once leaving you feeling overwhelmed. It suggests that you may be overdoing something, possibly working too hard to avoid facing the realities in your home or emotional life. A hangover in a dream suggests that some time away from your current work commitments may be beneficial at this time.
Bowel Movement
To dream about a bowel movement indicates that you are discarding longstanding ways of thinking. It generally means the liberation of powerful thoughts.
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