Hi
Welcome to the forum!
The symptoms (deep ache in those areas-- neck, shoulder, front, back and arm, a tingly sensation and lately a rash and burning on my inner arm) could be due to peripheral neuropathies, herpes, and peripheral artery disease. It could also be due to fibromyalgia or even chronic fatigue syndrome.
Stress and anxiety too could be the contributing factor. The other possibility is low Vitamin D levels. This can also cause similar symptoms. Along with it get your calcium ad parathyroid gland levels checked.
The aches in chest, a strange feeling and indigestion can be due to acidity with gastric reflux or GERD.
However on net and without examining it is difficult to give a confirmed opinion. Please consult your doctor about these possibilities. Hope this helps. Take care!