The most common post on tattoo forums is a photo captioned “is this normal?”. Usually it is. This guide sorts common changes into three groups — normal, worth showing your artist, and a reason to see a doctor — using the words of dermatologists who run tattoo clinics. It is a rough guide, not a diagnosis.
Quick check: is it normal?
A rough guide based on dermatology sources below, not a diagnosis. If you are worried, ask a doctor — and seek urgent care for trouble breathing, a racing heart, dizziness or rapidly spreading swelling.
For the first few days: redness, mild swelling, warmth, tenderness and clear or ink-coloured fluid on the wrap. Then, for one to two weeks: flaking, peeling and itching. After peeling, the tattoo often looks dull or cloudy for a few weeks while new skin settles.[1]
“Complaints may be acute or subacute and taper out as the tattoo heals.”
In plain terms: most of what worries people in the first weeks fades by itself. The pattern to look for is “getting better day by day”.
“The studies show that tattoo complaints dominated by itching and swelling are remarkably common and affect approximately 1/3 of tattooed individuals, with 1/5 of tattooed individuals having sun-related problems.”
In plain terms: a tattoo that puffs up and itches on a hot day or after sun is common and usually harmless. Sunscreen helps.
A blowout is ink that has spread under the skin beyond the line, leaving a blurry, often blue-ish halo. It happens when the needle goes too deep or at the wrong angle, and it is more common on thin skin (inner arm, ankle, hand). Swelling in the first days can look similar and settles; a halo still there after about a month is likely permanent. It can often be disguised by reworking or shading — talk to your artist.
| Infection | Allergic reaction to ink | |
|---|---|---|
| When | Usually within days to a couple of weeks | Weeks, months or even years later |
| Where | The whole tattoo or a part, spreading beyond it | Usually one colour only — most often red |
| What | Worsening pain, spreading redness, heat, pus, fever | Itchy, raised, sometimes scaly areas in that colour |
| Who to see | A doctor, promptly | A dermatologist |
“The majority of the complications were chronic: 91.9%. Allergic red tattoo reactions and chronic inflammatory black tattoo reactions (CIBTR) accounted for 50.2% and 18.2%, respectively, of all tattoo complications.”
In plain terms: among patients treated at a specialised tattoo clinic in Amsterdam, most complications were long-lasting reactions rather than quick infections — and half were allergic reactions in red ink. They are uncommon overall, but if one colour stays itchy and raised for weeks, see a dermatologist.
Redness, swelling or pain that gets worse after the first few days, red streaks spreading from the tattoo, thick yellow or green pus, or fever and chills are signs of possible infection. The American Academy of Dermatology advises seeing a doctor promptly: the sooner treatment starts, the less damage to your health and your tattoo.[1] Seek urgent care for trouble breathing, a racing heart, dizziness or rapidly spreading swelling.
Infections are uncommon — in a US survey of 501 tattooed adults, 3.2% had ever had an infected tattoo.[4] They can also come from contaminated ink, even in clean studios, which is why the FDA advises contacting a doctor if a tattoo does not seem to be healing.[5]
“Different reactions have different times of onset as few of them appear immediately after the procedure and some may take days to weeks to years to appear.”
In plain terms: a change in an old tattoo — a new rash, lumps, or a change in a mole within it — deserves a dermatologist’s look, not a guess.
Fact-checked against the sources above · last reviewed September 30, 2026. Quotations are taken word for word from the dermatologists’ published work; they have not reviewed this page. Who we quote and why →
General information, not medical advice. Your artist’s instructions come first for aftercare; signs of infection or an allergic reaction — or any health condition or medication you are unsure about — are a reason to talk to a doctor.