Less common causes of heel pain should be considered before a treatment regimen for plantar fasciitis is undertaken. These include sciatica, tarsal tunnel syndrome, entrapment of the lateral plantar nerve, rupture of the plantar fascia, calcaneal stress fracture and calcaneal apophysitis (Sever's disease).
A chemical reaction happens when one or more chemicals are changed into one or more other chemicals. Examples: 1  iron and oxygen combining to make rust. 2  vinegar and baking soda combining to make sodium acetate, carbon dioxide and water.
A chemical reaction is the change of a substance into a new one that has a different chemical identity.