What condition can cause high frequency mussel twitching, more like a vibration in the shoulders, across the upper chest, neck (mainly back of neck) and entire head? I can actually hear a low frequency hum in my ear. Ativan seems to lessen these vibrations but once it wears off, they are back. They can get very intense with visual distortions and and minor pain as well.
May be cervical spondylitis and hyperkalemia. U should go for cervical spine X-ray and MRI spine. Serum calcium levels should also be checked.