Hi,Welcome to HCM.
Based on the facts of your query,the
bruise on the forearm with white bump in the middle,seems to be due to Boil with
cellulitis with pointing white head/ or it could be a insect bite with bruise/cellulitis with poining head.
As you don't remember any bite or trauma and worried,
Second Opinion from Dermatologist /or GP,would help you to rule out any other causes of such a bruise with a lump.
I doesn't see Any relation of this bruise with bump to
Cymbalta.
You should not worry as it is not Cancerous and is treatable bruise with bump.
This reply would resolve your current issues and would reduce your
anxiety with it.
Hope this reply would help you to plan treatment with your doctor.
Will appreciate your Hitting thanks and writing excellent review comments to help needy patients like you.
Welcome with any other further query in this regard.
Good Day!!
Dr.Savaskar,
Senior Surgical Specialist
M.S.Genl-CVTS