Hi  Welcome to Healthcare Magic Forum  There can be two reasons for the above presentation,,Either you have developed contact sensitivity due to the tattoo and its pigment ie a kind of allergic reaction to the pigment.  Or you have developed infection at the site of the tattoo..  Allergic reaction usually presents with redness and development of fluid filled vesicular lesions with few solid papules or pustules over the affected area..the lesions in this case are very itchy in nature...  Infection presents with redness of the area with the development of pus filled lesions...  I would advice you to apply a steroid-antibiotic combination like Flutibact cream over the area  Take oral antihistamines like levocetrizine once a day for 3-4 days...  Keep the area clean and dry  Wash with lukewarm water twice a day before applying the cream  Do not use any other creams/oils/moisturizing lotions over the area..  If inspite of the above measures, the lesions persist or increase in size, then sometimes a course of oral steroids or oral antibiotics is required according to the clinical picture  Hope it helps  Wishing you speedy recovery  Dr Geetika Paul