Bunion surgery scar causing pain. Can it be removed? (Photo)

I had a bunionectomy (chevron procefure) 5 years ago on my right foot. Bunion has slowly been coming back. There is now a bump and it is getting bigger. Last 6 months I've been having pain and redness over the scar, from normal walking in flat shoes etc. I have tried covering the scar in band aids so it doesn't rub in shoes, and appling all kinds of creams. I have to keep filing the scar down with a foot file. The scar is become bigger and more red over time. Any advice?

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