Causes
The start of delirium can be triggered by a person being physically unwell or if their medication is suddenly changed. However, there are other factors which can increase the risk of a person experiencing delirium too.
Possible causes
- Starting or stopping taking prescription drugs.
- Poor hearing or vision (including not having their glasses or hearing aid).
- Having low blood pressure or not enough oxygen.
- Having an infection.
- Constipation and, or problems passing urine.
- Dehydration or lacking vitamins or minerals.
- Not having enough of particular vitamins or minerals.
- Having kidney or liver problems.
- Experiencing pain and anxiety.
- Any change in environment e.g. if you have moved house, into a nursing home or a different hospital ward.
Risk factors
As well as the above, you are more likely to experience delirium if you:
- Have dementia.
- Are dehydrated or have a poor appetite.
- Have a infection of any kind. However, some infections do not show up on tests.
- Constipation or trouble weeing.
- Are older.
- Have had surgery, particularly hip surgery.
- Are older and are taking a lot of medications.
- Experience sight or hearing difficulties.
- Are in pain.
- In an unfamiliar or distressing environment.
- Are nearing the end of your life.