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In Karsai Nei Tsang every session starts with the abdomen. The source presents this opening sequence, borrowed from Chi Nei Tsang, as a condition for any work lower down.
This page summarises how published sources describe a technique, with the anatomy and safety rules a practitioner needs. It does not replace supervised, in-person training, and it is not evidence that the technique treats any condition. In Thailand, Ministry of Public Health officials have said kasai massage is a treatment that belongs in licensed Thai traditional medicine settings, not general massage shops.
The techniques
1. Clockwise palm circles
What the source describes.
Wide circular sweeps of the palms over the whole abdomen, moving clockwise around the navel, to warm the area and let the client settle.
Anatomy under the hands.
Skin, abdominal wall muscles and, beneath them, the small and large intestine. Clockwise, as seen by the practitioner facing the client, follows the direction of the large bowel.
Position.
Client on the back, knees supported by a bolster; practitioner at the client's right side.
How it is performed.
- Rest both palms flat on the abdomen and wait a few breaths.
- Sweep in large clockwise circles, the whole hand in contact, fingers relaxed.
- Narrow the circles gradually towards the navel, then widen them again.
Pressure and pace.
Light to moderate. The abdominal wall should soften under the hands, not tighten. Match the rhythm to the client's breathing.
Do not / stop if.
- tenderness that is sharp or localised, especially in the lower right abdomen;
- a firm or pulsing mass under the hand;
- recent abdominal surgery, a hernia at the navel, or a full stomach.
2. Side-to-side kneading
What the source describes.
Kneading the abdomen from side to side, rocking the abdominal wall between the hands.
Anatomy under the hands.
Abdominal wall and the mobile loops of intestine beneath it.
Position.
Same position.
How it is performed.
- Place the hands on either side of the abdomen.
- Push the tissue gently away with the heel of one hand and draw it back with the fingers of the other.
- Travel slowly from the upper abdomen to just above the pubic bone.
Pressure and pace.
Moderate and rhythmic. The movement rocks the tissue rather than digging into it.
Do not / stop if.
- cramping or pain that persists after the movement stops;
- clients with inflammatory bowel disease in a flare, or recent bowel surgery.
3. Points around the navel ("wind gates")
What the source describes.
Fingertip pressure on a ring of points around the navel, worked in a set order, and on any knots felt in the abdomen. The source explains these points with traditional energy concepts.
Anatomy under the hands.
Around the navel: the rectus abdominis muscle and its sheath, and the intestine beneath. Directly behind the navel and slightly to the left lies the abdominal aorta.
Position.
Same position.
How it is performed.
- Work one point at a time with the pads of two or three fingers.
- Sink in on the out-breath, hold briefly, release on the in-breath.
- Move around the ring, then return to any area that felt tight.
Pressure and pace.
Progressive and brief. Fingertip pressure concentrates force, so stay well below the client's pain ceiling.
Do not / stop if.
- a strong pulse under the fingers: move away from the midline;
- sharp pain, nausea or a feeling of faintness;
- a bulge at or around the navel, which may be a hernia.
What can and cannot be said about this stage
Abdominal massage is one of the better studied forms of massage, mainly for constipation, where some trials suggest short-term benefit. That evidence does not extend to sexual or reproductive claims. The traditional explanations in the source, such as energy gates or toxins, are presented here as the source's own framework, not as physiology.
