There are several forms of Korean hand therapy that work by stimulating points on the hands that correspond to different parts of the body. Korean hand therapy (KHT) and Koryo hand therapy both use a map of the hands where points on the fingers and wrists correspond to organs, glands and other body parts. Hand reflexology also uses a mirroring method to locate reflex points on the hands. While the concepts are similar, the maps differ between KHT and hand reflexology. Stimulation techniques for KHT and Su Jok therapy include acupressure seeds, probes, and small needles. A 1998 Russian study showed positive responses to Su Jok therapy for treating bronchial asthma.

1. Korean Hand Therapy
There are several forms of Hand therapies originating from Korea including but not limited to:
Korean Hand Therapy (KHT), Koryo Hand Therapy, and Su Jok Therapy. They all work through the
similar theory that the hands contain a microcosm map with points corresponding to the rest of the
body. In traditional Hand Reflexology a Reflexologist will stimulate the entire hand reflexes for total
body wellness. Korean Hand Therapy may be applied only to specific areas that the client is
experiencing pain or discomfort, to the lower back points for example or the left knee points.
...
Comparing KHT and Hand Reflexology
The map of the Korean Hand Therapy has
points for many of the body's organs, glands
and parts. They are aligned from the middle finger down to the wrist on the palm and back of the
hand. At the tip of the middle finger are points for the head with the spine following down the length
of this finger on the back of the hand. The coccyx, or tailbone, is located just above the wrist joint on
the back of the hand. On the palm side of the hand this same line runs but here the internal organs
are found in points for the uterus, liver, stomach, heart and so forth.

2. Hand Reflexology uses a mirroring method to determine the reflex point locations: the body is
mirrored on the hand just as it is seen. The tips of all fingers correspond to the top of the head
(common point for sinus relief), while the "ball" of the hand represents chest and lungs and the heel
of the hand the pelvic area reflexes. So, the concepts are similar yet different.
In Su Jok Therapy the thumb represents the head and
the points run in the opposite directions from
traditional Hand Reflexology charts and the KHT
chart. The chest and lung area is found on the heel of
the hand while the "ball" of the hand contains the
pelvic area points.
Stimulating the Points
Stimulation of the hand points is similar for Su Jok
Therapy and Korean Hand Therapy: small acupressure
seeds or gold and silver pellets may be applied to
stimulate a point after a session. A small probe is
commonly used to find painful spots then stimulated
with the opposite end of the probe, a small metal
rolling device, or the pressure seed is applied. The
points can be very tender so communication with the
practitioner is paramount.
Other techniques include light therapy, magnets and a licensed acupuncturist may incorporate small
hand needles.
Practitioners ranging from chiropractors to acupuncturists, Reflexologists to nurses, and even
laypersons use Korean Hand Therapy. The benefits of a small map located on the hands make it a
very accessible modality for a wide range of body complaints. A 1998 Russian study [PubMed ID:
10067252] on Su Jok Therapy showed a positive response to the therapy by persons with bronchial
asthma.