Could this be plantar fasciitis? I was recently diagnosed with Achiiles tendonitis, and Posterior Tibial Tendonitis (tendonitis on the inside of my foot). Ihave pain through my achilles tendon and on the insid eof my foot due to these issues. Recently, my heel and plantar fascia ligament has been hurting. I have pain first thing in the morning, and if I stand on it for too long, sit for too long, or walk for too long. Could this be plantar fasciitis? I go to physical therapy, and the physical therapy student said that my plantar fascia ligament is tight. When I go into physical therapy on Monday, should I ask them about it and have them diagnose me? The brace I have for my foot doesn t really have any cushioning for my plantar fascia ligament, would I need something different if I have plantar fasciitis?