Hi Sarah
Steroids such as dexamethasone and prednisone are frequently used to treat myeloma patients, either prescribed alone or in combination with other myeloma drugs. They reduce swelling and inflammation and have been shown to kill myeloma cells. However steroids can cause many serious side effects, which are related to the dose and duration of use. Side effects caused by these steroids can include, but are not limited to, sweating, insomnia, mood and behavioural changes, increased energy, high blood sugar, infection, anxiety, fluid retention, increased appetite, lack of concentration. Most side effects will go away as the dose is lowered and then the drug is stopped altogether. However, if you mum has been taking the steroids for a long time and then stopped abruptly, she might experience withdrawal symptoms for a couple of months.
You mum needs to discuss her anxiety and confusion feelings with her consultant, who can review her steroid dosage, duration and side effects. Keeping a daily diary of the medication your mum is taking and noting any side effects/mood swings can be useful to see whether the side effects are linked to periods on and off steroids or other drugs.
I hope your mum’s myeloma treatment goes well.
Jan