Lack of spiritual clarity can often be experienced in dreams as illness. We are not putting ourselves in touch with a force that can help us to overcome difficulties.
Psychological / emotional perspective: Often when we are ill in a dream we are grappling with part of our personality. Part of us is out of balance and perhaps needs to be dealt with. Often the dream will give the method of dealing with it – perhaps by taking medication, having surgery or a combination of both. Illness also often represents our fears of not being looked after properly, our need to be allowed to heal properly.
Material aspects: Whatever life has to offer, we may be left with painful memories, feelings of anger and difficulties. In a dream these memories and feelings can surface as illness. Most of the time, such a dream image gives us information as to how we should deal with the difficulty. Illness that has manifested on a physical level can trigger vivid or frightening dreams.
A chronic illness in a dream means hindrances or suspension of one’s travel plans, or difficulties in earning one’s livelihood in a work that involves using one’s hands and feet, or it could represent impediments to achieving one’s goal.... chronic illness dream meaning
To dream that you are ill shows that you will have to fall a victim to some temptation, which, if you do not resist, will injure your character. ... ill dream meaning