Itchy raised lumps on scar tissue

[Beverly2547]

I had Liposarcoma on right inner aspect of knee 10 years ago.  There is a long history but now I am cancer free.  There has been in the last three days something happening to the left leg where a skin graft was removed to apply to the liposarcoma removal site.  The resultant scar tissue has raised round itchy lumps (thought they were bites but open to suggestion).  These have spread to the right tumor removal site, again only on the scar tissue.  What are these.  Are these bites.  They are only itchy, not painful.

[Dr Santos]

Hi Beverly,
Thanks for the update. Try to avoid scratching to prevent secondary bacterial infection. Ice pack and over-the-counter medicine such as antihistamine may also help provide relief. Take care and hope to hear from you again.

[Beverly2547]

Thank you for your response.  I will now that I know it may be more serious.  When I thought it was just bug bites, it seemed silly but this itching is about to drive me nuts!!
Again, thanks for getting back to me so quickly!

Beverly

[Dr Santos]

Hi,
How are you? Are there other symptoms present? Aside from keloid or enhanced scar development in areas with wound healing, this may also be caused by irritation, possible insect bite,  or skin conditions such as  dermatitis. There are some forms of dermatitis that occur in sites of mechanical injury or trauma. Try to avoid scratching to prevent secondary bacterial infection. It is best that you have this checked by your doctor or be referred to a dermatologist for proper evalaution. Direct clinical examination is important. Take care and best regards.