Dear friend, welcome to HCM!
From your history of blue veins
across chest, tingling
in arm and back, we must rule out thrombosis/ DVT of upper limb.The Deep vein Thrombosis
(DVT) is clotting of the major draining vein. Either from the upper limb or of the SVC.
Is your face/ arm swelling up?
Are you breathless?
Is your heart declarede weak? It could be failure.
Could you upload a photo of the lesions here using the site's uploader?
You should see your doctor to get evaluated. It may be a significant finding..
Take care and please keep me informed of your progress.
I hope to have answered your query satisfactorily.