Hello and welcome to HCM,
A painful lump on the chest which shows discoloration can be due to a number of causes.
It can be due to
hematoma,
nevus,
melanoma, etc. Pain in the lump can be due to
nerve involvement.
Is the lump red-purple in color? This is suggestive of hematoma.
Is the lump brown-black in color? In that case nevus or melanoma can be suspected.
You need to consult your doctor for clinical examination and relevant investigations.
A fine needle aspiration (FNA) is the first line of investigation.
This is an office procedure in which ceels are sampled with a needle.
The cells are sampled, stained and examined under the microscope.
This test will tell about the origin of the lump and its character.
The further management will be decided by the result of this investigation.
Thanks and take care.
Dr Shailja P Wahal