Sudden diziness and feelin rush in arms.

Hi there, My mother is having some problems from 15 days after She visited ortho clinic 25 days back and taking prescription medicine uric acid, vitamin d3 caps, Febuxostat, Gemcal, autrin, pantobill, Zincovit and rafen-sp for 10 days and followed less quantity diet for loosing her weight. She is feeling sudden dizziness and weakness with strange feeling of rushing in her whole arms like something is streching inside. I took her to clinic where she is diagnosed with a 3.1 mm kidney stone and her HB :10.5, Bilirubin :0.73, Sugar Random :106.3 and Uric Acid is down to 4.0 mg/dl that was earlier 6 mg/dl. I am quite worried now why she having this strange feeling in hands and sudden dizziness and weakness and after taking glucose in water or electral powder in water feeling better. This problem fears her most and usually happens after/before afternoon meals. She is also taking tegretal 200 mg tabs daily from almost 20 years. Any Suggestions for treatment of this problem. Kindly help me.