The symptoms of tarsal tunnel syndrome differ from many other causes of chronic heel pain because they arise from an irritated nerve rather than an injured tendon, ligament or bone. While plantar fasciosis usually causes localised pain beneath the heel, tarsal tunnel syndrome often produces burning, tingling or numbness that may spread into the sole of the foot.
The most common symptom is burning pain along the inside of the ankle or beneath the heel. Many patients describe the discomfort as an electric shock, pins and needles or a hot, burning sensation rather than a dull ache. This type of pain reflects irritation of the posterior tibial nerve and is one of the features that helps distinguish tarsal tunnel syndrome from plantar fasciosis.
Pain may radiate well beyond the heel. Depending on which branch of the nerve is affected, symptoms can extend into the arch, the toes or across the entire sole of the foot. Some patients struggle to identify one specific painful spot because the discomfort follows the distribution of the nerve rather than remaining localised to a single structure.
Numbness and tingling are also common. Patients often report intermittent pins and needles or reduced sensation in the sole of the foot, particularly after prolonged standing or walking. These neurological symptoms are uncommon in plantar fasciosis and should always prompt consideration of a nerve compression disorder.
The symptoms frequently worsen throughout the day. Standing, walking or exercising for prolonged periods increases pressure within the tarsal tunnel, leading to increasing nerve irritation. Many patients find that their foot feels progressively worse the longer they remain active. Unlike plantar fasciosis, severe first-step pain after getting out of bed is often absent.
Some patients notice that symptoms become more troublesome at night. Burning pain, tingling or numbness may interfere with sleep, particularly after an active day. Night-time neurological symptoms are another clue that the problem may involve nerve compression rather than a purely mechanical disorder of the plantar fascia.
Certain foot positions may aggravate symptoms. Activities that place the foot into excessive pronation or prolonged dorsiflexion may increase tension around the posterior tibial nerve and reproduce discomfort. Tight footwear or boots that place pressure around the inside of the ankle can also worsen symptoms in some individuals.
As the condition progresses, symptoms may become more persistent. Initially, patients often experience intermittent discomfort that settles with rest. However, longstanding nerve compression may eventually lead to constant burning pain, more frequent numbness or increasing sensitivity of the foot. Early diagnosis is therefore important because prolonged nerve compression is generally more difficult to treat than recent-onset symptoms.
Weakness is less common but may occur in more advanced cases. The posterior tibial nerve supplies many of the small muscles within the foot, and prolonged compression may affect their function. Patients occasionally report reduced toe strength, fatigue of the foot or difficulty maintaining balance during prolonged activity. These findings usually indicate more significant nerve involvement and warrant prompt assessment.
One of the reasons tarsal tunnel syndrome is frequently misdiagnosed is that many patients have more than one condition at the same time. It is not unusual for plantar fasciosis, Baxter's nerve entrapment or heel fat pad syndrome to coexist with tarsal tunnel syndrome. This explains why treatment directed at only one diagnosis sometimes provides incomplete relief.
No single symptom confirms tarsal tunnel syndrome. Instead, the diagnosis depends on recognising the characteristic pattern of burning pain, tingling and numbness together with a careful clinical examination and appropriate investigations. Identifying the condition early allows treatment to focus on relieving pressure around the nerve before permanent nerve damage develops.