The main differential diagnosis of<unk>  is plantar fasciitis. In<unk>  all parts of the<unk>  are tender while in plantar fasciitis typically only the part of the<unk>  closer to the toes is sore.
Heel pad syndrome
Plantar fasciitis
Tarsal tunnel syndrome
Back strain
Immersion foot syndromes
Facial femoral syndrome
Malunion
Anterior interosseous syndrome