I have persistent pins and needle/tingling in hands, fingers and even a little in toes & when occurs i get hot sweats.tightness in left deltoid also ?

Nerve damage: You may have experienced some abnormal nerve sensations due to temporary or permanent nerve damage. You may have to see a medical professional for definitive answer. There may be other systemic conditions that are the causes of paresthesia including stroke, diabetes to name a few. Pins and needles, tingling and/ or burning sensation in the upper and lower extremities require a medical consult.

Nerve: Sounds like some kind of neuropathy need a EMG study from a neurologist.