If you dream of having an affliction, your unconscious is trying to make you aware of a situation in your life that needs to change.
The nature of the affliction can help provide you with a clue about what needs to be changed. For example, if you dream that you have an affliction that is related to mobility, your unconscious could be telling you that you are procrastinating too much, and you need to take action.
A dream that you have an affliction that is related to your head, such as a severe headache, can mean that you are having an emotional reaction to something and that you need to respond more rationally.
An affliction of the heart in a dream can be a sign that there is a problem with a romantic relationship.
Dreaming that you are caring for someone with an affliction can be a message that you need to take better care of yourself.