Yuo seem to have skin infection
on left lower extrimity.
It may be pyoderma
It is caused by staphlocoocci.. bacteria.
You are having lymphadenopathy
in inguinal area on the same side.
That suggests the severity of infection.
Immediately you should consult dermatologist
Investigations may be done to rule out DM,HIV, anaemia,other internal diseases..etc
Oral antibiotic with anti inflammatory drugs will reduce infection.
Application of antibiotic cream may be helpful.
Take complete bed rest.
Improve immunity with immunobusters.
Have healthy food and proper sleep.
Improve hygiene, take dettol water bath.
I hope you will be alright.
Dr.Ilyas Patel MD