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Yes,you need to consult podiatrist.
The symptoms you have described of having hole/ulcer on the underside of foot that does not heal over is most likely due to diabetic ulcer.
Foot ulcers are a common complication of poorly controlled diabetes.Following can cause diabetic foot ulcers:poor circulation,high blood sugar (hyperglycemia),nerve damage,irritated or wounded feet.
A podiatrist will normally examine, clean and dress the ulcer regularly.He may need to remove any hard skin that prevents the ulcer from healing.If there is any pus,that may need to be drained. Antibiotics are usually prescribed.
Blood sugar always need to be under control & within limits.
So my best advise for you is to please make an appointment with your Podiatrist for clinical examination then treatment will be done accordingly.
Hope this helped
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