4 doctors weighed in:

Top left side of chest is randomly hurting. When taking deep breaths, top left side hurts. When extending my arm, my heart area/or muscles tighten.

4 doctors weighed in
Dr. Rebecca Gliksman
Internal Medicine

In brief: L chest pain

May be tendonitis ( pectoralis/biceps ) or costochondritis( inflammation of joint of ribs to sternum ) or AC joint.
Could try Motrin if not allergic to ease the discomfort, rarely autoimmune process, breast lesion( rather young ) or pericarditis or clot f/u w/ doc , ESR ,EKG, d-dimer, sono, echo. http://www.mayoclinic.org/diseases-conditions/costochondritis/basics/definition/con-2002445

In brief: L chest pain

May be tendonitis ( pectoralis/biceps ) or costochondritis( inflammation of joint of ribs to sternum ) or AC joint.
Could try Motrin if not allergic to ease the discomfort, rarely autoimmune process, breast lesion( rather young ) or pericarditis or clot f/u w/ doc , ESR ,EKG, d-dimer, sono, echo. http://www.mayoclinic.org/diseases-conditions/costochondritis/basics/definition/con-2002445
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Dr. Aaron Milstone
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