Question: What therapeutic purposes are horses used for?
About the article "Equestrianism", section "Overview of equestrian activities".

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Horses are trained and ridden for practical working purposes such as in police work or for controlling herd animals on a ranch.
They are also used in competitive sports including, but not limited to, dressage, endurance riding, eventing, reining, show jumping, tent pegging, vaulting, polo, horse racing, driving, and rodeo.
(See additional equestrian sports listed later in this article for more examples.)
Some popular forms of competition are grouped together at horse shows, where horses perform in a wide variety of disciplines.
Horses (and other equids such as mules and donkeys) are used for non-competitive recreational riding such as fox hunting, trail riding or hacking.
There is public access to horse trails in almost every part of the world; many parks, ranches, and public stables offer both guided and independent riding.
Horses are also used for therapeutic purposes, both in specialized paraequestrian competition as well as non-competitive riding to improve human health and emotional development.
Horses are also driven in harness racing, at horse shows and in other types of exhibition, historical reenactment or ceremony, often pulling carriages.
In some parts of the world, they are still used for practical purposes such as farming.
Horses continue to be used in public service: in traditional ceremonies (parades, funerals), police and volunteer mounted patrols, and for mounted search and rescue.
Equine therapy dates back to the times when horses were used for therapeutic riding in ancient Greek literature.
Orbasis of ancient Lydia documented the therapeutic value of riding in 600 B.C.
In 1946 Equine Therapy was introduced in Scandinavia after an outbreak of poliomyelitis.
Therapeutic Riding was introduced to the United States and Canada in 1960 with the formation of the Community Association of Riding of the Disabled (CARD).
In the United States riding for the disabled developed as a form of recreation and as a means of motivation for education, as well as its therapeutic benefits.
In 1969 the Cheff Therapeutic Riding Center for the Handicapped was established in Michigan, and remains the oldest center specifically for people with disabilities in the United States.
The North American Riding for Handicapped Association (NARHA) was founded in 1969 to serve as an advisory body to the various riding for disabled groups across the United States and it's neighboring countries.
NARHA provides safety guidelines and training, certifies therapeutic riding instructors, and approves therapeutic riding centers.
Animals such as elephants, dolphins, dogs, and cats have also been used for therapeutic purposes.
Horses become the most popular animal to use in animal therapy because they give immediate feedback to the rider’s actions.
Horses also have the ability to mirror the feelings of the rider.
Horses’ large and intimidating appearance forces their rider to gain trust around them. 
In medicine, diathermia or diathermy is usage of electrically induced heat in therapeutic purposes.
It is commonly used to cause muscle relaxation.
It is also a method of heating tissue electromagnetically or ultrasonically for therapeutic purposes in medicine.
In surgery, it is used as a method of electrocauterization, for example to control bleeding or cut through tissues.
"Electric diathermy" (not to be confused with therapeutic ultrasound) may be loosely called "diathermy," but it does not use dielectric heating but rather high frequency alternating electric or magnetic fields, sometimes with no electrode or device contact to the skin, to induce gentle deep tissue heating by induction or dipole rotation.
If precautions are followed no tissue is ordinarily damaged.
It is generally used in physical therapy biomedical applications. 
The genus "Agaricus" includes some species that are cultivated commercially throughout the world.
The common "button mushroom", "Agaricus bisporus", is the most widely cultivated edible mushroom.
"Agaricus blazei" is a well-known medicinal mushroom used for a number of therapeutic and medicinal purposes.
Several species are poisonous, such as some "Lepiota" and "Chlorophyllum" species. 
Lokais have been used for a variety of purposes throughout the years.
Theses horses provide transport over precipitous mountain country, they are raced, they are used in the game of kokpar, and they are often employed as a pack animal.
The Lokai horse is even sometimes used as a draft horse.