Cervical spondolysis. Spondolysis?

2 months ago severe dizziness , vomiting, in early morning at 5:15.After that sudden weakness in whole body and too much constipation . Before experience all this she was having extreme pain near ear /inside ear sometimes.Also buzzing sensation (since 4-5 months).Dr diagnosed it as cervical spondolysis and gave treatment.She felt heavy head in the centre of head and headache But Dr gave medications for it 3 weeks ago and now it has decreased.After almost 2 months her dizziness got cured but so he asked to stop pill for dizziness .But today she again had dizziness (mild gradually increasing)She was diagnosed with ARCHANOID spinal cyst 4 years ago .It's treatment is going on too.Since dizziness is recurring should we go for brain MRI/ct scan or is it normal in cervical spondolysis?Since dizziness is recurring should we go for brain MRI/ct scan or is it normal in cervical spondolysis?Yesterday she had shoulder pain too.