An obvious symptom is that the arch of the foot appears high, even upon standing. Pain is often noted on the lateral column of the foot with the instability of the lateral ankle and pain under the ball of the foot. Calluses may appear on the ball, side, or heel of the foot. Swelling in the lateral foot and ankle are sometimes noted.
The instability caused by the arch could result in ankle sprains, and in severe cases, lateral column stress fractures. Plantar fasciitis commonly occurs with high arched feet, as do hammertoes (bent toes) or claw toes (toes clenched like a fist).
Patients with cavus foot may also experience a weakness of the muscles in the foot and ankle that results in dragging the foot when taking a step- a symptom known as foot drop. This symptom is usually a sign of an underlying neurologic condition.