The four elements—earth, water, wind and fire—form a basic framework in Thai traditional medicine. Practitioners use this traditional model when considering an individual’s constitution and wellbeing. It is a historical system of explanation, not a substitute for modern anatomy, diagnosis or medical tests.
How the four elements are described
1. Earth (Pathawi)
Earth describes solid, tangible structures. Traditional texts classify it into twenty components:
- Hair on the head
- Body hair
- Nails
- Teeth
- Skin
- Flesh
- Tendons
- Bones
- Bone marrow
- Spleen
- Heart
- Liver
- Membranes and connective tissue
- Kidneys
- Lungs
- Large intestine
- Small intestine
- Undigested food
- Digested waste
- Brain tissue
2. Water (Apo)
Water describes fluids and their movement through the body within the traditional framework. Twelve components are listed:
- Bile
- Phlegm
- Pus
- Blood
- Sweat
- Solid fat
- Tears
- Liquid fat
- Saliva
- Nasal mucus
- Joint fluid
- Urine
3. Wind (Wayo)
Wind describes movement. Traditional texts distinguish six forms:
- Upward-moving wind
- Downward-moving wind
- Wind within the stomach and intestines
- Wind in the abdomen outside the intestines
- Wind moving throughout the body
- Inhalation and exhalation
4. Fire (Techo)
Fire describes warmth and transformation. Four forms are traditionally distinguished:
- Warmth that maintains body temperature
- Excessive heat and restlessness
- The processes associated with ageing
- Digestive fire
These terms belong to traditional theory. Symptoms such as fever, pain or breathing difficulty still need appropriate medical assessment.