Common disorders causing paraesthesias are rheumatoid arthritis
and carpal tunnel syndrome transient ischemic attack, motor neurone
disease, or autoimmune disorders like multiple sclerosis or lupus erythematosus. A diagnostic evaluation by a doctor is necessary to rule these out.
Treatment will depend on the diagnosis.
Hope it helps.Take care and pls do keep me posted on how you are doing and if you have any additional queries.