My mother of 52yr of age is having weakness and loss of strength in the left side of her body( lt hand and lt leg), she also have starting limping( which is though v. Mild) from the left side of her body. We had taken her to many doctors and had done lots of investigation ( including lft, kft, tft, ecg, CT brain plain) which are normal, she sometimes also loose her balance while walking and falls down ( though there is no complaints of vertigo) Please help in probable diagnosis. Or if any other investigation needed than pl suggest