Arm tingling, also known as paresthesia, results from dysfunctional operation of nerves in the left arm. Often, people misdiagnose this symptom as something to be ignored.
The tingling in the left arm could indicate a stroke symptom. Look for signs of severe headaches, difficulties in speech, visual distortion and poor coordination.
If you experience tingling in the left arm accompanied by tightness in the chest and stiff jaw pain, call 9-1-1. These are heart attack symptoms.
Carpal Tunnel Syndrome
If your occupation includes extensive use of your fingers and hands, the tingling sensation in your arm could be caused by blocked circulation due to a pinched nerve in the wrist, a condition called Carpal Tunnel Syndrome. Office workers, mechanics or musicians who grip objects constantly usually experience Carpal Tunnel Syndrome.
Tight clothing, jewelry and improper sleeping position can constrict blood flow. People also describe such symptoms in euphemisms such as "my arm is asleep." Uncomfortable sleeping or awkward reclining positions cause this arm tingling sensation.
Tingling sensations in the left arm occur if you suffer from and kind of vascular problem, which constricts blood circulation. People who suffer from diabetes, muscular sclerosis and migraines also experience tingling sensations.
Do not ignore the tingling sensations in your left arm, and make sure to contact 9-1-1 for stroke and heart attack symptoms.