Thanks for choosing health care magic for posting your query.
I have gone through your question in detail. It is most probably possible that all the three different complains may not be related to each other. The itching lesion is some kind of eczema
, although can be confirmed only after having a look at it. The other lesion of swelling and pain radiating to cough
could be a musculoskeletal problem and the third being a different skeletal problem.
You should visit a dermatologist
and an orthopedician. Orthopedics doctor may advise you a few x-rays.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
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Wish you good health,
Dr. Srikanth Reddy M.D.