Hello and welcome to eHealth Forum!

The symptoms (My left shoulder has been feeling awkward & crunchy for about 18 months; my left arm and hand feels weaker than usual. My left hand also feels slightly cold/tingley,but only slightly) could be due to compression of the spinal nerves in the cervical spine region. This can happen due to overuse of computers, work involving straining of neck, canal stenosis, bone disease, spondylosis, poor posture etc. This could also be a TIA or mini stroke or transient ischemic attack, though less likely.

Your other symptoms (feeling quite faint and distant all day every day - v fatigued, despite getting enough sleep and eating well. I feel like I'm in quite a severe haze all the time, shakey and disconnected;twitchy) could be due to medications you may be taking for wheezing like terbutaline or asthalin etc. These symptoms could also be due to some disturbances in the body.

You should get the blood levels of the following checked if they have not already been checked: potassium, calcium, sodium, vitamin B complex, or vitamins B1, B3, or B6 and Vitamin D. Get your kidney function, parathyroid gland function and adrenal function tests done because these affect the electrolyte balance in the body. Stress, alcohol, caffeine and fatigue all cause similar symptoms. You may feel you sleep well but disturbed sleep or poor sleep pattern can also affect the body.

Since a confirmed diagnosis cannot be given on net please discuss these possibilities with your doctor once. Hope this helps. Take care!