It is the possibility that you might be having an allergic reaction to tattoo ink that has been used... maybe a particular colour or its contents is not tolerating well with your skin. Sometimes in patients that have keloids tendency a thicker scar can form at the point of a tattoo which can be itchy. take tab levociz 5 mg twice a day for the time being to temporarily improve the itching. However this is not the definitive treatment you will have to visit a qualified dermatologist to get the condition properly assessed.Hope this is helpful.