hello, thank you for using health care magic, well, leg crams at night is very common problem, it is due to low calcium level.. take calcium tablets and take calcium rich food.. along with calcium take vitamin D also as vitamin D helps in calcium absorption ..you can take SHELCAL-M it contains both calcium and vitamin D. one tablet per day, you can go for any other local brand also.. take more milk, eeg, fish, meat,cereals, fruit like banana.. these are rich in calcium and vitamin D.. about itching around mouth i want to ask you that is it itching that you are feeling or its tingling like sensation.. because tingling and numbness around mouth is also common manifestation of low calcium level.. if you feel that its definately itching then there can be many cause for it.. visit near by physician for that hope this helped you take care..