When to get medical care
Some redness, swelling, soreness, clear fluid, itching, flaking, or scabbing can occur during normal healing. The American Academy of Dermatology advises seeking medical care promptly when redness spreads or darkens instead of improving, pain worsens, pus or open sores appear, or fever, chills, or a painful rash develop.
Trouble breathing, chest tightness, dizziness, widespread hives, intense swelling, or another severe reaction requires immediate medical care. Contacting the tattoo shop does not replace evaluation by a qualified clinician.
Source: American Academy of Dermatology: tattoo skin reactions.