It is unusual that you developed this 9 months after the surgery. Only the surgeon will know the techniques that may be responsible for your symptoms and it is best to seek their advice.
Having said that the rest of this is speculation. In my opinion there may be several causes.
1) referred pain: the pain may be originating in another area but is being "referred" to your ear due to the rearranging of skin and nerves. This is like phantom limb pain. Desensitization therapy may help to ease the discomfort.
2) the other possibility is that permanent sutures such as the contour threads may have been used which are now irritating a nerve which travels to the ear. Some of these "threads" have barbs and some can migrate or move which can then irritate nerves after a period of time. In any case you may need to remove the stitch min order to get relief.
3) another potential cause is thst when minor nerves are cut (this happens all the time during surgery) they grow back and form little sensitive clumps called neuromas which are painful and easily excitable. You can often find these by tapping along the operated area until you find one spot that causes a pins & needles or electrical sensation. Usually it is a very specific site.
I hope this helps.
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