You seem to be having pigmented purpuric dermatosis
or schambergs disease.
Now this is essentially a harmless skin condition. It is basically only a cosmetic problem which means that it looks bad.
Common in people with long standing jobs or in players.
Occurs due to leakage of blood which settles beneath the skin.
Various lightening creams can be used but the lesions tend to reappear on stopping treatment.
Take oral vitamin C
It is better not to worry about these lesions.
Dr Geetika Paul