What Causes Vertigo While On Lisinopril And Atorvastatin?

My wife is having increasingly severe vertigo-began 24hrs ago. She can t lower her head to her chest and raise it to center without the room spinning . Cannot lie on her right side w/o vertigo, fairly severe. Cannot lie on her back without severe vertigo. CAN lie on her left side w/o vertigo. Mild nasal stuffiness, not severe. Taking BP meds-Lisinopril, 2.5mg, Triamterene/Hctz, 37.5/25, Atorvastatin, 10mg. All once a day, morning. Mild nausea, better when she stays still. Has gotten worse in the last 4-5 hrs. Help?!?! PS--has a family history of Ménière s disease. Also, family history of heart disease, and high BP. Hers is borderline high, and responds well to weight loss and exercise.