Hi jennie ,
Thanks for writing in.
or shingales is a viral infection.It is caused by varicella zoster virus
It causes pain in dermatomal lesions.And even after healing of cutaneous lesions it may cause pain.
The lump you found out is an independent finding and has nothing to do with the shingales.
Both are separate and these are not related.
A visit to dermatologist
will confirm the diagnosis and help in prescription medications.
Hope this helps.