The interpretation of dreaming that you or someone else has dementia is that there is a situation in waking life that makes you lose your mind. Maybe someone or a situation exasperates you. Alternatively, the dream may be a reflection of someone in waking life who suffers from dementia.
You may look in dreams interpretation for other symbols :
Demolition : The interpretation of dreaming about a demolition is that that major changes are ongoing in your life. Maybe you feel like you lose everything under control. ... n.html">strong>
Demons : The interpretation of seeing demons in your life is that you may experience fear, emotional stress or physical abuse in waking life. Demons are also a symbol ...