Why Do My Nail Beds Hurt? Top Causes and What You Can Do

Nail bed pain almost always traces back to one of a handful of causes: physical trauma, infection around the nail fold, a reaction to nail cosmetics, or an underlying condition like psoriasis or poor circulation. The specific pattern of pain, whether it throbs, burns, stings with cold, or aches constantly, often points straight to the culprit. Some causes are simple to fix at home, while others signal something worth getting checked out.

Trauma and Blood Under the Nail

The most common reason for sudden, intense nail bed pain is a direct injury. Stubbing a toe, slamming a finger in a door, or dropping something heavy on your hand can rupture tiny blood vessels beneath the nail plate. When blood pools in that tight space between the nail and the bed underneath it, pressure builds fast. That throbbing pain you feel is literally the blood pushing against the nail plate with nowhere to go.¹ The nail may turn dark purple or black as the blood collects.

If the pain is severe and the discolored area covers a large portion of the nail, a doctor can relieve the pressure by making a small hole through the nail plate, a procedure called trephination. In a study of patients treated this way, all reported pain relief after the procedure, and in straightforward cases the nail did not need to be removed.² For minor cases where the blood spot is small and the pain is tolerable, ice, elevation, and over-the-counter pain medication are usually enough while the nail grows out on its own.

Repetitive, lower-grade trauma can cause a similar problem. Runners frequently develop darkened, sore toenails from their toes hitting the front of their shoes on downhill stretches. Shoes that are too tight or too short are a classic trigger. Switching to footwear with a thumb’s width of room in the toe box often prevents the issue from returning.

Infections Around the Nail Fold

Paronychia is the medical term for inflammation and infection of the tissue right next to the nail. It happens when that thin seal between the nail plate and the surrounding skin breaks down, letting bacteria or fungi in.³ Acute paronychia, lasting less than about six weeks, usually shows up as a red, swollen, tender area along one edge of the nail. It often follows a hangnail, an aggressive manicure, nail biting, or a minor cut near the cuticle. You may see pus forming under or beside the nail.

Chronic paronychia develops more slowly and lasts longer than six weeks. It tends to affect people whose hands are frequently wet, such as dishwashers, bartenders, and healthcare workers who wash their hands constantly. The skin around several nails may become boggy and swollen, with intermittent flare-ups of tenderness. Keeping hands dry, avoiding irritants, and sometimes using a prescription antifungal or anti-inflammatory cream are the mainstays of treatment. Acute paronychia with a visible pocket of pus may need to be drained by a doctor and treated with antibiotics.

Gel Polish, Acrylics, and Chemical Reactions

If your nail beds have started hurting after getting gel or acrylic nails, the cosmetics themselves may be the problem. There are two distinct ways this happens, and they call for different responses.

The first is mechanical damage. When acrylic nails are removed, the filing process can thin the natural nail plate so much that the nail bed underneath becomes visible as a pinkish-red area. That thinned nail is more sensitive to pressure, temperature, and touch.⁴ The solution is to give your nails a break from acrylics and let the natural plate regrow to its normal thickness, which usually takes a few months.

The second is an allergic reaction. Gel polishes and acrylic nail systems contain chemicals called methacrylates, and some people develop allergic contact dermatitis to them. A systematic review of gel nail polish complications found that allergic reactions were the most common issue, accounting for about 70% of reported cases, and they developed on average about two and a half years after a person started using gel polish.⁵ That long delay trips people up because they assume something they have been using for years cannot suddenly be the cause. But allergic sensitization works exactly that way: repeated exposure over months or years primes the immune system, and then one day it starts reacting.

Symptoms of a methacrylate allergy go beyond simple soreness. You may notice the nail plate loosening from the bed, thickening skin under the nail, redness, and itching of the surrounding skin. In severe cases, the nail itself can become badly distorted.⁶ The DIY trend of applying gel and acrylic nails at home has made these reactions more common, since salon technicians are at least somewhat trained to avoid skin contact with uncured product, while home users often are not.⁷ If you suspect an allergy, the only reliable fix is stopping all methacrylate-containing products and seeing a dermatologist for patch testing to confirm the culprit.

Psoriasis and Other Skin Conditions

Psoriasis does not just affect the skin on your elbows and knees. It frequently targets the nails, and when it does, the nail bed is often ground zero. Psoriasis in the nail bed can cause “salmon patches,” which are reddish-orange discolorations visible through the nail plate, along with thickening skin beneath the nail and the nail pulling away from the bed. Tiny splinter-like lines of dark red, caused by bleeding in the nail bed’s capillaries, may also appear.⁸ These changes can make the nails tender, especially with pressure.

What catches many people off guard is that nail psoriasis sometimes shows up before any skin plaques do, or without skin involvement at all. If you have sore, pitted, crumbling nails with no obvious cause, psoriasis is worth considering, particularly if you also have joint stiffness or swelling in your fingers. A dermatologist can often spot the telltale signs with a dermoscope, a magnifying device that reveals details invisible to the naked eye. Research has shown that salmon patches and splinter hemorrhages are detected more reliably with dermoscopy than with a standard clinical exam.⁹

Treatment for nail psoriasis depends on severity. Mild cases respond to topical steroids or vitamin D analogs applied around the nail. More stubborn cases may call for steroid injections into the nail fold or systemic medications that target the immune pathways driving psoriasis. These treatments take patience: because the nail grows slowly, visible improvement can lag behind the start of treatment by months.

Raynaud’s Phenomenon and Circulation Problems

If your nail beds ache or sting when you are cold, and your fingers turn white, then blue, then red as they rewarm, Raynaud’s phenomenon is a likely explanation. Raynaud’s causes the small arteries supplying the fingers and toes to spasm and narrow dramatically in response to cold temperatures or stress, temporarily starving the tissue of blood. It affects roughly 5% of the population. For most people it is a standalone condition, but for some it is linked to autoimmune diseases like systemic sclerosis.

The pain in Raynaud’s can be sharp during an episode and may persist as a dull ache afterward. In severe or repeated episodes, the restricted blood flow can damage the nail bed and surrounding tissue over time. Practical management focuses on keeping your core body temperature warm (not just your hands), using insulated gloves, and avoiding rapid temperature swings. For people with frequent or severe attacks, medications that relax blood vessel walls can help. If your Raynaud’s started after age 30, affects just one hand, or comes with skin thickening or sores on your fingertips, those are red flags that it may be connected to something systemic, and a rheumatologist should evaluate you.

Glomus Tumors and Other Rare Growths

When nail bed pain is out of proportion to anything obvious, when it has been there for months or years, when it flares with cold exposure, and especially when you can pinpoint one exquisitely tender spot under the nail, a glomus tumor is a possibility. These are small, benign growths arising from specialized cells that regulate blood flow and temperature in the fingertips. The classic presentation is a triad of severe pain, pinpoint tenderness, and sensitivity to cold.¹⁰ Even a light tap or slight temperature drop can trigger disproportionate pain.¹¹

Glomus tumors are rare, and their rarity is part of the problem. People often bounce between doctors for years before the diagnosis is made, because the nail may look normal or show only a subtle bluish discoloration. An MRI of the finger or high-resolution ultrasound can reveal the tumor. Once found, surgical removal is curative in most cases, and the relief from chronic pain is dramatic.

Subungual melanoma is a much more serious but far less common consideration. A dark streak under the nail that widens over time, especially if the pigment bleeds into the surrounding skin, warrants urgent evaluation. Unlike a simple bruise under the nail, melanoma pigmentation does not grow out with the nail and does not follow a clear injury. If a dark mark under your nail has been present for weeks without fading or shifting position as the nail grows, get it looked at.

Nerve Damage and Small Fiber Neuropathy

Sometimes the nail bed itself is perfectly healthy, but the nerves serving it are not. Small fiber neuropathy, which affects the thin nerve fibers responsible for pain and temperature sensing, can cause burning, shooting, or stinging sensations in the fingertips and toes. It sometimes starts in the extremities and works inward, so the nail beds may be among the first areas where you notice symptoms.¹²

The tricky part is that small fiber neuropathy produces very few visible signs. Standard nerve conduction studies often come back normal because those tests mainly check large nerve fibers. A person may be told everything looks fine when the pain is very real. Specialized testing, such as a skin biopsy to count nerve fiber density, is sometimes needed to pin down the diagnosis.¹³ Diabetes is the most common underlying cause, but autoimmune conditions, vitamin deficiencies (particularly B12), thyroid disease, and alcohol use are also on the list. Treating the underlying cause, when one is found, can slow or reverse the nerve damage.

Compressed nerves higher up the arm or neck can also refer pain to the fingertips. Cervical radiculopathy, where a nerve root in the neck is pinched, can produce numbness, tingling, or pain that radiates all the way to the fingers.¹⁴ The giveaway is that the pain typically follows a specific pattern along one or two fingers rather than affecting all the nails equally, and it often comes with neck stiffness or pain that worsens when you turn your head a certain way.

Chemotherapy-Related Nail Changes

Cancer treatment, particularly taxane-based chemotherapy drugs used for breast and other cancers, is a well-recognized cause of nail bed pain. Taxanes can damage the nail bed and nail matrix directly, leading to painful bruising under the nail, the nail lifting off its bed, and paronychia. In one study of patients receiving taxane chemotherapy, roughly two-thirds experienced moderate nail side effects including painful subungual bruising and nail loosening.¹⁵

There is some evidence that sunlight or UV exposure may worsen these nail changes during treatment, leading some oncology teams to recommend dark nail polish or nail coverings as a simple protective measure.¹⁶ Cooling the fingertips with ice packs during chemotherapy infusions (sometimes called frozen glove therapy) is another strategy some patients try, though evidence on its effectiveness is still limited. If you are undergoing chemotherapy and your nails are becoming painful, tell your oncology team. They can adjust nail care recommendations and, if severe, potentially modify treatment timing or dosing.

How Nail Problems Affect Daily Life

It is easy to dismiss nail bed pain as a minor annoyance, but research suggests the impact is more significant than most people realize. Nail disorders can interfere with fine motor tasks, make it painful to grip objects, type, or button clothing, and affect a person’s self-image. Studies have found that severe nail involvement negatively affects social functioning and work ability, leading to a meaningful decrease in quality of life for a substantial portion of patients.¹⁷ This matters because people often hesitate to seek help for what they consider a cosmetic issue, when in reality the pain or dysfunction may be a sign of something treatable. Nail changes are sometimes the first visible clue to conditions like psoriatic arthritis, circulatory disorders, or even melanoma, making them worth investigating rather than ignoring.

When to See a Doctor and What They Will Look For

Not every sore nail bed needs a medical visit. If you can trace the pain to a clear injury, the nail is intact, and the discomfort is manageable, giving it time and basic care (ice, elevation, keeping it clean) is reasonable. But certain patterns of nail bed pain warrant professional evaluation:

• Pain without injury: Persistent nail bed soreness that developed without any trauma you can recall, especially if it worsens over weeks.
• Color changes: A dark streak, persistent redness, or a growing discolored area under the nail that does not grow out with the nail.
• Pus or spreading redness: Signs of infection, particularly if the redness is extending beyond the immediate nail fold.
• Cold sensitivity: Severe pain triggered by cold, focused under one nail, lasting months or longer.
• Multiple nails involved: When several nails are simultaneously affected with pitting, thickening, or loosening, which suggests a systemic condition rather than local injury.

A dermatologist evaluating nail bed pain will typically start with a thorough visual exam, often supplemented by dermoscopy, which can reveal features like splinter hemorrhages, subtle pigment patterns, or vascular changes invisible to the unaided eye.¹⁸ Depending on what they find, they may order imaging (MRI or ultrasound for suspected tumors), blood work (to check for autoimmune markers, blood sugar, or vitamin levels), or a nail or skin biopsy. The specific workup depends heavily on the clinical picture, but bringing a timeline of your symptoms, any changes you have noticed in the nail’s appearance, and a list of products you use on your nails helps the evaluation go faster.

Simple Measures That Help Across Most Causes

While the specific treatment depends on the diagnosis, some general practices protect the nail bed and reduce pain regardless of the underlying issue:

• Keep nails trimmed short: Long nails act as levers that can pull a tender nail plate away from the bed with everyday tasks.
• Wear gloves for wet work: Prolonged water exposure softens the nail and surrounding tissue, making both more vulnerable to chemical irritation and infection.
• Avoid aggressive manicures: Pushing cuticles back too aggressively or cutting them breaks the seal that keeps pathogens out of the nail fold.
• Choose well-fitting shoes: Toenail bed pain frequently comes down to chronic pressure from footwear. A proper fit with adequate toe room prevents repetitive microtrauma.
• Moisturize the cuticle area: A simple emollient applied around the nail fold helps maintain the skin barrier, which is the first line of defense against paronychia.

If you use gel polish or acrylics and are experiencing nail pain, the most informative test is a break from those products for at least three months. If the pain and nail changes resolve during the break and return when you resume, the cosmetics are the likely cause. Patch testing with a dermatologist can confirm whether you have developed a methacrylate allergy, which is important to know because those chemicals appear not only in nail products but also in some dental materials and medical adhesives.