What Can Cause Foot Pain and When to Worry

Foot pain has dozens of possible causes, ranging from overuse injuries and poorly fitting shoes to chronic conditions like arthritis and diabetes. The most useful way to narrow down what’s behind your pain is to pay attention to where it hurts, when it started, and what makes it worse. Most foot pain stems from a handful of common conditions, and many of them respond well to conservative treatment.

Pain in the Heel

The heel is one of the most common sites of foot pain, and plantar fasciitis is usually the top suspect. This condition involves irritation of the thick band of tissue that runs along the bottom of your foot, connecting your heel bone to your toes. The hallmark symptom is a stabbing pain in the bottom of the heel that’s worst with your first steps in the morning or after sitting for a long time. It tends to ease once you start moving, then flare again after extended time on your feet. Most people recover within several months using rest, stretching, supportive footwear, and icing.

Achilles tendinitis is the other major heel condition. It causes pain at the back of the heel or just above it, where the large tendon connecting your calf muscles to your heel bone becomes inflamed. Risk factors include age, flat or high arches, tight calf muscles, obesity, and ramping up physical activity too quickly. Running in worn-out shoes, running in cold weather, and running hills all increase your risk. Certain antibiotics (fluoroquinolones) and conditions like high blood pressure or high cholesterol are also linked to higher rates of Achilles tendon problems.

Heel spurs, bony growths on the underside of the heel bone, show up frequently on X-rays but don’t usually cause pain on their own. They’re often found alongside plantar fasciitis or Achilles tendon issues, so the spur itself is rarely the thing that needs treatment.

Pain in the Ball of the Foot

The ball of the foot, the padded area just behind your toes, takes a beating during walking, running, and jumping. When pain settles here, a few conditions are most likely.

Morton’s neuroma involves a thickening of tissue around a nerve between the toes, typically between the third and fourth. People describe it as feeling like they’re standing on a marble or a pebble stuck inside their shoe. The pain is often stabbing, shooting, or burning, and it gets worse with activity or when wearing tight shoes. You may also feel tingling, numbness, or a clicking sensation in the forefoot. Spreading your toes apart or switching to wider shoes can bring quick relief.

Metatarsalgia is a broader term for pain and inflammation in the ball of the foot, often from overuse, high-impact activities, or shoes with poor cushioning. It’s common in runners and people who spend long hours standing.

Stress fractures are tiny cracks in one or more of the long bones (metatarsals) that run through the front of your foot. They develop gradually from repetitive force, so they’re especially common in runners, basketball players, and dancers. The pain typically builds over days or weeks and worsens with activity. One tricky aspect of stress fractures is that they don’t always show up on initial X-rays. MRI can detect the early bone swelling that precedes a visible fracture line, sometimes weeks before the crack itself appears. If you have worsening pain in the ball of your foot that doesn’t improve with rest, a stress fracture is worth ruling out.

Pain in the Big Toe

The base of the big toe is a surprisingly busy intersection for foot problems. Gout is one of the most dramatic. It’s caused by a buildup of uric acid crystals in the joint, and flares often strike the big toe first. A gout attack typically comes on suddenly, often at night, with intense pain, swelling, redness, and warmth. The joint can become so tender that even the weight of a bedsheet feels unbearable.

Bunions form when pressure pushes the big toe toward the other toes, creating a bony bump at the base of the big toe joint. Common causes include wearing narrow or pointed shoes, the natural mechanics of your gait, inflammatory conditions like rheumatoid arthritis, and prolonged standing. Bunions develop gradually and tend to get worse over time, especially if the underlying pressure isn’t addressed.

Hallux rigidus is a form of degenerative arthritis specifically affecting the big toe joint. It causes stiffness, restricted movement, and pain that’s often felt at the top of the forefoot over the big toe. Unlike gout, which flares and resolves, hallux rigidus is a progressive condition where the joint gradually loses its range of motion.

Pain in the Arch and Midfoot

Flat feet (fallen arches) can cause a dull ache along the inner arch, particularly after prolonged standing or walking. The lack of arch support changes how force distributes across the foot and can contribute to other problems, including Achilles tendon strain and knee pain.

Arthritis in the small bones of the midfoot can cause pain at the top of the foot, particularly with walking or pushing off. A Lisfranc injury, which involves damage to a strong ligament in the middle of the foot, causes similar pain at the top of the midfoot but typically follows a specific injury, like twisting the foot or dropping something on it. Lisfranc injuries are often mistaken for simple sprains, so persistent midfoot pain after an injury deserves a closer look.

Nerve-Related Foot Pain

Peripheral neuropathy, most commonly caused by diabetes, produces a distinctive type of foot pain that’s different from mechanical or joint pain. Instead of a sharp ache tied to a specific spot, neuropathy causes burning, tingling, or numbness that typically starts in both feet and works its way upward. Symptoms are often worse at night. Some people develop extreme sensitivity to touch, while others gradually lose feeling altogether.

Tarsal tunnel syndrome is similar to carpal tunnel syndrome but in the ankle. A nerve running through a narrow passage on the inside of the ankle gets compressed, causing shooting pain, tingling, or numbness along the bottom of the foot. It can be triggered by flat feet, ankle injuries, or swelling from conditions like arthritis.

Pinched nerves elsewhere in the foot or lower back can also radiate pain into the foot. If your foot pain comes with numbness, weakness, or a “pins and needles” sensation, nerve involvement is likely part of the picture.

Toe Deformities

Hammertoe and mallet toe are conditions where a toe bends abnormally at one of its joints, creating a claw-like shape. The bent joint can rub painfully against the inside of your shoe, and calluses or corns often develop on top. These deformities usually affect the second through fifth toes and tend to worsen over time if left untreated. Ill-fitting shoes are the most common driver, though nerve damage and arthritis can also play a role. In the early stages, the toe is still flexible and can be managed with toe exercises, padding, and roomier shoes. Once the joint stiffens, options become more limited.

Skin and Nail Causes

Not all foot pain comes from deep structures. Ingrown toenails cause sharp, throbbing pain along the edge of the nail, usually on the big toe. Plantar warts, caused by a virus, grow on the sole of the foot and can feel like a small stone pressing into the skin with every step. Both are common, treatable, and easy to distinguish from more serious conditions.

Inflammatory and Autoimmune Conditions

Several forms of arthritis target the feet. Rheumatoid arthritis tends to affect the small joints symmetrically, meaning both feet at once, and causes morning stiffness that lasts more than 30 minutes. Psoriatic arthritis, linked to the skin condition psoriasis, can cause swollen “sausage toes” along with joint pain. Osteoarthritis is the wear-and-tear form and typically affects joints that have been heavily used or previously injured. All three can cause chronic, progressive foot pain that worsens without management.

When Foot Pain Signals Something Serious

Most foot pain is manageable and not dangerous, but certain signs warrant prompt attention. You should seek care quickly if you can’t walk or bear weight on the foot, if you have an open wound that’s oozing pus or not healing, or if you notice signs of infection like warmth, skin color changes, swelling, and fever over 100°F. People with diabetes need to be especially vigilant: any foot wound that is deep, discolored, swollen, warm, or slow to heal requires medical evaluation, since reduced sensation can mask injuries that escalate quickly.