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.
Chemical reactions are very common. A chemical reaction is any process by which the atoms of one or more substances are rearranged to form different substances. There are numerous types of chemical reactions.