Hi,
Welcome to the forum. I am really glad to help you out.
If thereâs no fever, no local tenderness and the scar has healed well, then I suppose there isnât anything much to worry. The small bump which he can feel will gradually go away.
This develops due to the local oozing of the fluids from the damaged blood vessels and this fluid gets absorbed and thereâs nothing to worry about the same. I sincerely hope this helps. Take care.