It takes a while for the area to recover from surgery, so I would give him a little more time before the tenderness clears up and the blood flow is restored properly. He may find that taking Ginkgo biloba helps with the blood flow, but if there is any residual discomfort then he should discuss this with his doctor or consultant.
Do you have questions? Please feel free to ask.
Stay up to date with the latest pollen information by finding your local pollen forecast from over 30,000 locations across the UK.