Heel pain that flares up when you’re lying in bed usually stems from one of a handful of conditions, and the most common by far is plantar fasciitis. When you rest for a prolonged period, the thick band of tissue along the bottom of your foot tightens in a shortened position, which is why even lying still can produce an aching or throbbing sensation. But plantar fasciitis isn’t the only explanation. Depending on how the pain behaves, whether it wakes you from sleep, and exactly where on the heel you feel it, the cause could range from nerve compression to a small bone tumor that classically announces itself at night.
How Plantar Fasciitis Produces Pain at Rest
Most people associate plantar fasciitis with the sharp stab of their first steps in the morning. That hallmark “start-up pain” happens because the plantar fascia contracts while the foot is in a relaxed, slightly pointed position during sleep. When you suddenly stand and stretch it under your full body weight, micro-tears in the inflamed tissue reopen. What’s less commonly discussed is that many people with plantar fasciitis also feel a deep ache in the heel while still in bed, before they ever put a foot on the floor. The tissue isn’t just irritated by movement; it’s also inflamed, and inflammation generates pain signals even without mechanical load. Lying flat can also increase blood flow to the extremities compared with sitting upright, which may intensify the throbbing quality some people describe.
Position matters too. If you sleep on your stomach or with heavy blankets pressing down on your toes, your foot is pushed into a pointed-toe position for hours. That sustained shortening of the calf and plantar fascia sets the stage for more intense pain when you shift position or flex your foot even slightly. People who sleep on their backs without anything supporting the feet often experience the same effect, because gravity pulls the toes downward all night.
Nerve Entrapment in the Heel
When heel pain is burning, tingling, or electric rather than the dull ache of plantar fasciitis, a compressed nerve is a strong possibility. The tarsal tunnel, a narrow passage on the inner side of the ankle, houses the tibial nerve and its branches. One branch in particular, known as Baxter’s nerve (the inferior calcaneal nerve), runs along the bottom of the heel and can become pinched against bone or tight tissue. Anatomical studies show that the key branching points and likely entrapment sites for the tibial nerve, Baxter’s nerve, and the medial calcaneal branch all cluster within a very small area on the inner heel, which means even minor swelling or structural changes can compress multiple nerves at once.1SpringerLink / Surg Radiol Anat. Clinical-anatomic mapping of the tarsal tunnel with regard to Baxter’s neuropathy in recalcitrant heel pain syndrome: part I
Nerve pain tends to worsen at rest for a reason that’s counterintuitive: during the day, movement and muscle contraction actually help pump fluid away from the nerve. When you lie down and everything relaxes, venous pooling and tissue swelling in the ankle and foot can increase pressure on the nerve. People with tarsal tunnel syndrome or Baxter’s neuropathy often report that the pain is worst at night or upon waking, and that it radiates into the sole or even the toes. This pattern can easily be mistaken for plantar fasciitis, especially since both conditions localize to the inner heel. The distinguishing clue is often the quality of pain: nerve compression produces burning, numbness, or pins-and-needles, while plantar fasciitis pain is more commonly described as a sharp or deep ache.
Osteoid Osteoma and Bone-Related Causes
If your heel pain reliably wakes you in the middle of the night and improves noticeably after taking ibuprofen or another anti-inflammatory, a small benign bone tumor called an osteoid osteoma deserves consideration. This is one of the few musculoskeletal conditions whose signature is genuinely nocturnal pain that responds well to over-the-counter anti-inflammatories. Osteoid osteomas are noncancerous growths that produce a characteristic round or oval area visible on imaging, and they most often affect young people.2PubMed Central. Osteoid Osteoma of the Calcaneus in a Young Patient Treated With Radiofrequency Ablation: A Case Report One reported case involved a teenager with two years of night pain in the back of the foot and ankle before the osteoid osteoma in her heel bone was identified.3PubMed Central. Three-dimensional printing in the surgical treatment of osteoid osteoma of the calcaneus: A case report
Calcaneal stress fractures are another bone-level cause that can produce rest pain. Unlike a dramatic break from an obvious injury, stress fractures develop gradually from repetitive load, and initial X-rays often look completely normal. One case report describes a woman whose heel pain after a minor injury was initially chalked up to soft tissue damage because her X-rays were clear; it was only when the pain persisted and an MRI was ordered that the stress fracture was found.4PubMed Central. Delayed Diagnosis of Calcaneal Stress Fracture: A Case Report Stress fractures ache at rest because the bone is structurally compromised and inflamed, so unlike muscle or tendon pain, removing the mechanical load doesn’t remove the pain signal. If your heel hurts when you squeeze it from both sides (not just pressing on the bottom), that’s a classic clinical sign pointing toward the bone rather than the soft tissue.
Heel Fat Pad Problems
Underneath your heel bone sits a specialized cushion of fat compartments designed to absorb impact. When this fat pad thins out or becomes damaged, the heel bone sits closer to the skin surface, and even the pressure of a mattress against your heel can become uncomfortable. Fat pad atrophy is associated with aging, diabetes, obesity, and certain rheumatological conditions.5PubMed Central. What do we actually know about a common cause of plantar heel pain? A scoping review of heel fat pad syndrome
The pain from heel fat pad syndrome feels different from plantar fasciitis in a subtle but important way. Plantar fasciitis pain is usually focused where the fascia attaches to the front-bottom of the heel bone, while fat pad pain is more centrally located on the bottom of the heel and sometimes extends toward the back. People with this condition often say that walking barefoot on hard floors is excruciating, and that lying on their back with the heel pressing into the mattress produces a bruise-like ache. Gel heel cups or cushioned socks can provide immediate relief, but the loss of fat pad tissue itself is generally not reversible. Getting an accurate diagnosis matters, because treatments that help plantar fasciitis (like stretching the calf and plantar fascia) won’t do much for a thinned fat pad.
Gout, Inflammatory Arthritis, and Systemic Conditions
Anyone who has experienced a gout flare knows that it tends to strike at night. The classic location is the big toe, but gout can also affect the heel, and when it does, the pain can be severe enough to make even the weight of a bedsheet unbearable. Gout occurs when uric acid crystals deposit in a joint or around a tendon, and one reason flares peak overnight is that body temperature drops slightly during sleep, which encourages crystal formation. Research in people with gout has found that calcaneal spurs (bony growths on the heel) are extremely common in this population, with roughly 45% of gout patients having at least a moderate-to-large spur at the Achilles attachment and a similar proportion having one on the bottom of the heel.6PubMed Central. The frequency of Achilles and plantar calcaneal spurs in gout patients The presence of metabolic conditions like high blood pressure, diabetes, or high cholesterol alongside gout significantly increased the odds of developing these spurs.
Spondyloarthritis, a family of inflammatory conditions that includes ankylosing spondylitis and psoriatic arthritis, is another systemic cause worth knowing about. These conditions cause inflammation where tendons and ligaments attach to bone, a process called enthesitis. The Achilles tendon and the plantar fascia insertion on the heel are two of the most commonly affected sites. The inflammatory pain of spondyloarthritis is characteristically worse with rest and better with movement, which is the opposite of mechanical pain. If your heel pain improves after you’ve been walking around for a while and worsens when you’ve been still, especially if you’re also experiencing lower back stiffness in the morning, an inflammatory cause is worth raising with your doctor.
When the Nervous System Amplifies the Pain
Some people with chronic heel pain reach a point where the original injury or inflammation no longer explains the level of pain they feel. Their nervous system has become sensitized, essentially turning up the volume on pain signals so that stimuli that shouldn’t hurt, like the light pressure of a sheet or the feeling of a sock, become genuinely painful. This phenomenon, called central sensitization, appears to be surprisingly common in chronic plantar fasciitis. One study of over 100 patients with chronic plantar fasciitis found signs of central sensitization in roughly 86% of them, compared with about 44% of control subjects without foot pain.7SpringerOpen / PubMed Central. Frequency of central sensitization and nociplastic pain in patients with plantar fasciitis
Central sensitization helps explain why some people’s heel pain persists long after the tissue has theoretically healed, and why it can be particularly bothersome at night. During the day, your brain is occupied with countless other sensory inputs that compete for attention. At night, those distractions disappear. In a dark, quiet room, the brain has far fewer competing signals, and pain that was manageable during a busy afternoon can feel amplified. Sleep deprivation itself also lowers pain thresholds, creating a vicious cycle: the pain disrupts sleep, and the lost sleep makes the pain worse the following night. If your heel pain has lasted more than three months, seems disproportionate to what imaging shows, and is worst when you’re lying quietly, it’s worth discussing sensitization-related pain management with a clinician.
Diabetic Peripheral Neuropathy
Diabetes is one of the most common causes of nerve damage in the feet, and the symptoms are frequently worst at night. Diabetic peripheral neuropathy often starts in the toes and gradually works its way toward the heel, producing burning, tingling, or a “walking on pebbles” sensation. Some people describe a paradoxical combination: the heel feels numb to the touch but simultaneously painful. The pain intensifies at night for many of the same reasons other nerve pain does, including reduced distractions and changes in blood flow when lying down.
A small randomized trial found that soaking the feet in warm salt water reduced neuropathic pain scores in people with painful diabetic neuropathy, suggesting that simple home measures can provide some overnight relief.8PubMed Central / Elsevier. Evaluation of the efficacy of warm salt water foot-bath on patients with painful diabetic peripheral neuropathy: A randomized clinical trial That said, the cornerstone of managing diabetic neuropathy is blood sugar control, and anyone experiencing new or worsening foot symptoms should have it evaluated promptly, because loss of sensation in the feet raises the risk of undetected injuries and ulcers.
Night Splints and Practical Measures for Bedtime Heel Pain
If plantar fasciitis is the culprit, a dorsiflexion night splint is one of the most commonly recommended tools. These boot-like devices hold the foot at a right angle while you sleep, preventing the plantar fascia from shortening overnight. One study found that patients who used a night splint alongside standard conservative treatment showed significantly greater improvement in pain and function scores after two months compared with those who relied on conservative treatment alone, and heel pain recurred in about 14% of the splint group compared with 29% of the non-splint group.9PubMed. The effectiveness of dorsiflexion night splint added to conservative treatment for plantar fasciitis
The picture isn’t entirely clear-cut, though. Another trial that tested adding a tension night splint to a structured home exercise program in people with chronic plantar fasciitis found little additional benefit from the splint, with both groups improving similarly.10PubMed Central. The addition of a tension night splint to a structured home rehabilitation programme in patients with chronic plantar fasciitis does not lead to significant additional benefits in either pain, function or flexibility: a single-blinded randomised controlled trial The likely takeaway is that a good stretching and strengthening program matters more than the splint itself, but for people who aren’t disciplined about doing their exercises, the splint enforces a sustained stretch that they’d otherwise skip.
Beyond splints, a few practical adjustments can reduce nighttime heel pain regardless of the underlying cause:
- Pillow positioning: Placing a pillow under your calves or between your feet can take pressure off the heel when lying on your back or side.
- Loose bedding: Heavy blankets pushing the foot into a pointed-toe position worsen both plantar fascia tightness and nerve compression. Lighter covers or a bed cradle that lifts the blankets off your feet can help.
- Pre-bed stretching: A few minutes of calf stretches and gentle ankle circles before getting into bed can reduce the degree of tightness that builds overnight.
- Anti-inflammatory timing: If you’re taking over-the-counter anti-inflammatories, taking a dose an hour before bed rather than only in the morning can reduce pain during the hours you’re trying to sleep.
Heel Pain in Children and Teenagers
Kids aren’t immune to nighttime heel pain, and the most common diagnosis in active children between roughly ages 8 and 14 is Sever’s disease (calcaneal apophysitis). This isn’t actually a disease but an overuse condition affecting the growth plate at the back of the heel. During growth spurts, the Achilles tendon pulls on a still-maturing bone, causing inflammation. Children with Sever’s disease tend to feel the most pain during and after sports, but it can also ache at rest.
Sever’s disease is usually self-limiting, but it can mask other problems. A case report describes a 9-year-old boy who was initially diagnosed with Sever’s disease and treated conservatively, but whose heel pain, along with heightened sensitivity and difficulty bearing weight on the heel, persisted. Closer evaluation revealed that the pain was actually neuropathic, originating from the medial calcaneal nerve, and it responded to targeted nerve treatments rather than the rest and stretching typically prescribed for Sever’s.11SpringerOpen / JA Clinical Reports. Medial calcaneal neuropathic pain clinically diagnosed in a child initially considered to have Sever’s disease: a case report The lesson for parents is that if a child’s heel pain doesn’t follow the expected trajectory of improvement with rest and activity modification, it’s worth asking whether the original diagnosis was correct.
When to See a Doctor Rather Than Wait It Out
Most heel pain, even the kind that bothers you in bed, resolves with conservative measures over weeks to months. But certain features warrant a faster trip to a clinician. Pain that consistently wakes you from a sound sleep, as opposed to hurting when you happen to be awake and lying down, raises the index of suspicion for bone pathology like an osteoid osteoma or stress fracture. Pain accompanied by visible swelling, redness, or warmth over the heel points toward gout or infection. Numbness, tingling, or burning that spreads beyond the heel into the sole or toes suggests nerve involvement. And heel pain in someone with diabetes deserves evaluation sooner rather than later, because neuropathy progresses silently and the consequences of missed foot problems can be severe.
It’s also worth reconsidering the diagnosis if you’ve been treating presumed plantar fasciitis for two to three months without meaningful improvement. Persistent heel pain has a broad list of possible causes, and the conditions described above overlap enough in their symptoms that a clinical exam, and sometimes imaging, is the only reliable way to tell them apart. An MRI can reveal stress fractures invisible on X-ray, identify nerve compression, show the extent of plantar fascia damage, and detect bone tumors in a single study. Asking for imaging isn’t being dramatic; it’s appropriate when pain isn’t following the expected script.