Treatment of underlying medical conditions or the discontinuation of certain medications may alleviate symptoms.
Mrs Wood has no significant underlying medical conditions that may be causing her depression, however you might consider whether her back pain is a contributing factor. Some blood pressure medications have been linked to depression although Hydrochlorothiazide is not among them.
It is important to consider, however, that there is a risk of Syndrome of Inappropriate Anti-diuretic Hormone (SAIDH) when anti-depressants are prescribed in conjunction with Hydrochlorothiazide, so this should be closely monitored if Mrs Wood is prescribed an anti-depressant.
There are a number of treatments for depression, both pharmacological and non-pharmacological, and these can work well alone or in conjunction with each other.
The most common treatment plan for major depression is anti-depressant medication in conjunction with cognitive behavioral therapy (or similar psychological therapy).