Thanks for your query
You seem to have developed neurodermatitis
over the leg.
This is an itchy eczematous skin condition.
Try and avoid scratching the area as it tends to increase the eczema.
Apply topical steroid
over the affected area.
Take oral antihistamines for itching.
Apply oil once or twice a day to moisturize the skin.
Hope it helps
Dr Geetika Paul