Hi..thanks for writing here.Recurrent itching
over shin mostly suggestive of eczema
.Such type of eczema usually occur because of barrier function of skin is disturbed and skin becomes dry leading to itching and cracking of skin.So main part of treatment in these cases is maintaining skin integrity.Avoid excess of hot water during bath ,apply plenty of moisturiser like cetaphil
moisturising cream just after bath.Use mild soaps like dove .You can try more potent steroid
cream like diprovate
over affected area for few days along with tab.atarax 10 mg at night.Do continue with moisturizer even when you have no itching ,this will prevent skin dryness and avoid relapse.I think this will help you to solve your problem.