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.
In a synthesis reaction two or more simple substances combine to form a more complex substance. Two or more reactants yielding one product is another way to identify a synthesis reaction. For example, simple hydrogen gas combined with simple oxygen gas can produce a more complex substance-----water! The chemical equation for this synthesis reaction looks like: reactant + reactant -------> product.