From your description, seems like you have either contact eczema or it can be Neurodermatitis
although the latter usually presents unilaterally...
Now first some general advise...
Wear pure cotton socks
Wear only leather or cloth shoes...avoid rubber or plastic footwear
Moisturize the area sufficiently with moisturizing lotions/creams/oil....but avoid using mustard oil
Now you will need to apply a topical steroid
cream over the lesion for sometime (something like Clobetasol Propionate
0.05% cream) over the affected area and take some oral antihistamines for itching....If the condition doesnt improve, then visit a dermatologist
for proper assessment and treatment...
Hope it helps
Dr Geetika Paul