Hi there,
Your wife could be having gastro-oesophageal
reflux disease (
GERD).Any history of
heartburn, regurgitation etc?Has she done any blood tests like thyroid function test or
Hemoglobin levels?Sometimes thyroid
disorders and iron defeciency anaemia can present with similiar symptoms of breathlessness. Is she on any medication? Certain drugs like metronidazole can cause metallic taste in the mouth. Is she suffering from anxiety/depression? By SOB do you mean shortness of breath? Any dental/gingival problems? Any respiratory infection including tonsillitis?These are the common causes I can think of. Hope this helps. Kindly get back to me if you have any further queries. Hope your wife feels better soon :)