Palpating the affected web space causes a palpable click that reproduces the symptoms. What is the most likely diagnosis?

A 27-year-old account executive for a failing medical board review company presents with pain and tingling in her right foot. She states the pain is most notable between her second and third metatarsals. She says her foot feels better when she removes her 4-inch heels and massages her foot. The pain occurs a few times a week and waxes and wanes in intensity. PMH: History of gonorrhea treated 6 months ago Physical Exam: Palpating the affected web space causes a palpable click that reproduces the symptoms.
What is the most likely diagnosis?

a. Metatarsal fracture
b. Tibial stress fracture
c. Morton’s neuroma
d. Plantar fasciitis

Answer c. Morton’s neuroma Morton’s neuroma is a common and painful condition of the common digital nerve of the foot, most commonly seen between the second and third web spaces. A metatarsal fracture presents after trauma and is accompanied by severe constant pain with possible ecchymosis. A tibial stress fracture is an overuse injury with pain over the tibial bones rather than in the foot, and plantar fasciitis is self-resolving pain in the bottom of the foot that feels like a tack and improves with walking.
The neuroma develops on a branch of the common digital nerve in the foot.