To dream that you are undead represents your inability to express yourself. You are feeling disconnected with others. Alternatively, the dream suggests that you have relapsed back to your old habits and ways. 

To dream that you are undead represents your inability to express yourself. You are feeling disconnected with others. Alternatively, it suggests that you have reverted back to your old habits and ways.

To see someone as a zombie implies that your feelings for them is dead. You have not emotional attachment towards them.