There is provided an arch strap suitable for the treatment of pain in a patients heel, such as plantar fasciitis, posterior tibial tendonitis and capsulitis of the foot. The arch strap comprises a first portion serving as a pad, shaped and sized to fit under the arch beneath a patients foot along the lateral portion of the foot from the fifth metatarsal head to the back of the heel and extending upwardly along one side of the patients foot to the medial portion of the foot. The first portion is preferably adhesively attached to the arch of the foot and provides support and stability to the foot when properly positioned on a patient. There is an elongated strip having a first end attached to one side of the first portion and extending around the patients heel and positioned in the medial portion of the foot where it adhesively attaches to the foot. The elongated strip is preferably an adhesive elastic tape such as Elastoplast® elastic adhesive bandage. The elongated strip serves to keep the first portion in place and to provide support in the patients heel to relieve pain. There is also provided a method for using the heel pain strap.