Nail Pitting: Causes, Psoriasis Link, and What to Do

Last reviewed: 2026-08-10

Quick answer

Nail pitting is the name for small dents or depressions in the surface of the nail, and the most common cause is psoriasis, which affects the nails in about half of people with the condition at some point. Pitting can also appear with eczema, alopecia areata, and other immune conditions. Pits themselves are not dangerous, but because they often point to an underlying condition, new or spreading pitting is worth a dermatologist’s look.

On this page

• What nail pitting looks like
• Common causes
• Is it serious?
• What your body might be telling you
• What you can do
• FAQ

What it looks like

Nail pitting looks like tiny dents, dots, or depressions punched into the nail surface. The pits can be few and shallow or many and deep, and they form in the nail matrix, the growth area, so they appear as the nail grows out.

Pitting often appears with other nail changes when psoriasis is the cause: discoloration (salmon patches under the nail), lifting from the nail bed, thickening, or crumbling. Pits alone can be subtle, and they are easy to confuse with ordinary nail damage, which is why context matters.

Common causes

Most common

• Psoriasis. The leading cause of nail pitting. About half of all people with psoriasis develop nail problems at some point, and pitting is one of the classic nail signs.
• Eczema (atopic dermatitis) that involves the nail area.

Less common

• Alopecia areata, the autoimmune condition best known for hair loss, which can also cause nail pitting and ridging.
• Psoriatic arthritis, where nail changes can accompany joint symptoms.
• Reactive arthritis, lichen planus, and sarcoidosis, which can all involve the nails.
• Minor trauma to the nail base, which can leave temporary dents or marks.

Rare

• Other autoimmune or immune-mediated conditions, including pemphigus vulgaris and incontinentia pigmenti.

Is it serious?

Pitting itself is not an emergency, and a few shallow pits from an old injury or minor trauma are usually nothing. What matters is the pattern and what comes with it.

Usually benign. A few pits on one nail with a known minor injury, or stable shallow pits you have had for years.

Worth a check. New pitting on several nails, pits with skin changes like scaly patches (possible psoriasis), or pitting with hair loss (possible alopecia areata).

See a doctor if:

• Pitting appears on several nails or keeps spreading.
• You have skin symptoms too: scaly, silvery patches (psoriasis), itchy inflamed skin (eczema), or patchy hair loss (alopecia areata).
• The nail is also discolored, lifting, thickening, or crumbling.
• You have joint pain, stiffness, or swelling, especially morning stiffness or finger swelling, since nail changes can accompany psoriatic arthritis.
• Pitting appeared suddenly across many nails.

What your body might be telling you

Straight answer: nail pitting is usually an immune-system story, not a nutrient story, and this article should say so clearly.

• Psoriasis is the headline. Pitting happens when the nail matrix is disrupted by the same immune overactivity that drives psoriasis skin patches. Treating psoriasis is what treats the pitting.
• No vitamin or mineral deficiency is an established cause of nail pitting. The deficiency angle that applies to other nail changes (iron for pale or spoon nails, for example) does not apply here.
• Alopecia areata and eczema are also immune-mediated, which is why a dermatologist is the right person to sort out the cause.
• If pitting comes with joint symptoms, mention it: nail changes can be an early clue to psoriatic arthritis, and early treatment protects the joints.

The honest framing: pits are a clue pointing at the immune system, and the useful conversation is with a dermatologist, not a supplement label.

What you can do

• See a dermatologist for a diagnosis. Pitting can look similar to fungus or injury, and the treatment differs completely by cause, so guessing wastes months.
• Treat the underlying condition. If psoriasis is the cause, controlling it is what improves the nails, and nails grow slowly, so improvement takes months.
• Protect nails from further trauma: avoid picking at pits, keep nails trimmed, and wear gloves for manual work.
• Moisturize the nails and cuticles, which supports healthier regrowth even if it does not remove existing pits.
• Do not buy vitamin or mineral supplements for pitting. They do not treat the causes above.
• If you have joint pain or stiffness along with nail pitting, tell the doctor, since psoriatic arthritis is treatable and early care matters.

FAQ

What causes nail pitting? Psoriasis is the most common cause, affecting about half of people with psoriasis at some point. Eczema, alopecia areata, psoriatic arthritis, and other immune conditions can also cause it, and minor trauma can leave temporary dents.

Is nail pitting a sign of a vitamin deficiency? No. Pitting is not an established sign of any vitamin or mineral deficiency. It is most often linked to immune-mediated conditions like psoriasis, so the right move is a medical diagnosis rather than supplements.

Does nail pitting mean I have psoriasis? Not necessarily, but it is the most common cause, and pitting can appear before or without obvious skin patches in some people. A dermatologist can tell whether the pattern points to psoriasis or another cause.

Can nail pitting be treated? Yes, when the underlying cause is treated. Psoriasis treatment, for example, improves nail pitting over time, and nails grow slowly, so visible change takes months. There is no quick fix that erases existing pits.

When should I see a doctor about nail pitting? See a doctor when pitting spreads across nails, comes with skin or hair changes, involves nail discoloration or lifting, or is accompanied by joint pain and stiffness. Those patterns point beyond simple trauma.

Explore more: this guide is part of the complete library, what your nails say about your health.

Sources

• Cleveland Clinic: Nail Pitting, What It Looks Like, Causes and Treatment. https://my.clevelandclinic.org/health/symptoms/nail-pitting
• Cleveland Clinic: Nail Psoriasis, What It Is, Causes, Treatment. https://my.clevelandclinic.org/health/diseases/22841-nail-psoriasis
• American Academy of Dermatology: What is nail psoriasis and how can I treat it? https://www.aad.org/public/diseases/scaly-skin/psoriasis/diagnosis-and-treatment-of-psoriasis/what-is-nail-psoriasis-and-how-can-i-treat-it
• Clinical Advisor: Nail pitting causes. https://www.clinicaladvisor.com/features/nail-pitting-causes/

Disclaimer

This article is for information only and is not medical advice. Always consult a qualified healthcare provider about your health.

Reviewed by the VI Editorial Team. Last reviewed: August 10, 2026