The plantar fascia may become irritated and inflamed when subjected to excessive stress, resulting in soreness and pain, typically felt during the heel. At this time I am able to don it continuedly with no pain, will go on to have on it. Many thanks! - Siew S.C Examine entire https://www.theorthopaedicandpainpractice.com/why-is-the-bottom-of-my-heel-painful/