What causes itching on the right side of the stomach?

Itching: It is difficult to give you a precise cause of one-sided itching. Usually would be due to skin irritation due to dryness, however, local nerve sensitivity such as past shingles would be an uncommon cause. Try some otc Hydrocortisone 1% cream and a moisturizing lotion to see if it helps. Conditions such as eczema or contact dermatitis could occur if you see a rash.