Right hand is always cold and right arm feels numb/tingly. What could this be?

Thoracic Outlet. While these symptoms could certainly be a normal finding, if their severity is worse enough it maybe related to an artery/nerve issue in the shoulder region. Thoracic outlet syndrome is a condition that can cause numbness/tinging sensations as well as poor blood flow into an arm/hand. A vascular surgeon may be able to help address this better. I hope this helps.

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Pain on right hand side of stomach and my right arm feels numb and tingly I'm on penicillin could that be an effect to that?

It all depends . At 31 gastritis likely due to alcohol or Aspirin like substances , treated with h2 blocker, proton pump inhibitors , or protective like sucralfate , and withdrawal of the substance a bacterial infection like h.Pylori need antibiotics for 10 days , rarer autoimmune like that cause B12 deficiency need blood work , and by the way can cause tingling need supportive treatment and vitamin replacement. Read more...

Right breast and arm feels numb/weak. Both heats up to the point it feels cold. Right hand as well followed by tingles. Lower back. Any ideas/causes?

Depends on details. Pay careful attention to what part of right arm and breast are numb. "Heats up toe the point it feels cold" may be autonomic dysfunction. Pay attention to specifically what part of arm tingles. If low back is related then combination of arm and low back in setting of otherwise healthy young woman may mean stress biology (in which case tests probably normal). Quite treatable after diagnosis. Read more...

I 've had numbness and tingling in my right hand for awhile now. My right arm gets numbness and tingling too. I experience no pain at all.?

Multi possibilities. I am assuming that you are right hand dominant. It could be a problem anywhere from your brain to a peripheral nerve. If it is mostly on the radial (thumb) side on the hand that area is controlled by the medial nerve- common possibilities include carpal tunnel syndrome. If more on the pinky side then Ulnar nerve may be responsible. Your doctor may get Nerve conduction studies to help delineate. Read more...
My be Carpal Tunnel. What kind of work do you do? You may suffer from carpal tunnel syndrome, due to overuse of the hand. Easy to treat without surgery (if that's what you've got). Read more...
Neuropathy. Numbness and tingling(paresthesias) in the hand and arm can be due to nerve compression in several areas: Carpal Tunnel Syndrome(from pinched nerve in wrist), Ulnar Neuropathy(nerve compression at elbow) and Cervical radiculopathy(compression in the neck) For more information on CTS see: http://bit.ly/1xTEkXx Neuropathy: http://bit.ly/1pAbbJw Cervical radiculopathy: https://bit.ly/1yPwhcG. Read more...

What could be causing my right hand to tingle and my right arm to go numb and have pain?

Possibly Nerve pain. This could be because of some irritation or pinching of a nerve in your neck or shoulder girdle as well as more distally. I recommend you see your regular physician to get started towards the right diagnosis. Read more...