Welcome to HCM,
With little history, I feel that you may be having Schamberg's disease.
It is progressive pigmented purpuric dermatosis
Actually, there is mild infection of capillaries..capillaritis .
The condition is mild and benign.
It may go away by itself within few weeks to few months.
Take vitamin C
Apply thrombophob oint.
Keep legs elevated while sleeping.
You may be benefitted.
Still, you contact dermatologist
I hope you got my answer.
Dr. Ilyas Patel MD