 [ Symptoms ] i think i am having an allergic reaction to my tattoos and piercings [ Disease ] hi such allergic reactions do occur because of tattoo piercings and last for around 5 6 months if you are diabetic then it may last even longer taking anti allergic medicines is the only treatment option you can use anti histaminic creams before taking oral tablets if the symptoms are mild and when the hives are in a very early stage thanks