Thanks for the query,
Yes it is normal to have hard area around wound.
In normal process of healing, there occurs fibrosis
around the wound.
Dont worry it will reduce as your wound completely heals.
As for now you can apply a topical anti bacterial cream like mupirocine.
Please meet a dermatologist
for exact diagnosis.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.