The core of the Systemic Typology Model is constituted by three categories that divide psora into three typologies. We have classify the whole set of homeopathic remedies into these three sectors. So, according to the type of psora, the practitioner will direct his therapeutic toward the category of homeopathic remedies that belong to this type and exclude the others.
According to Galien, we determine three great categories of pneuma/psora: natural, vital and nervous that we can put in link with the the three sectors of the soul of Plato (Eros, Thymos and Logos) and the three humors (Dosha) of the Ayurveda (Kapha-Phlegm, Pitta-Bile and Vata-Wind). Each sector is governed by an emotion and presents an anatomical seat (that can vary according to the different authors).
Here is a synoptic table of these three constitutional categories :
Natural or Wind psora is based on desire, and mediates reactions to all appetitive stimuli and is involved in the incentive processes moving to the final biological reinforcer. It is responsible for generating the emotion of ‘anticipatory pleasure’, and hope itself. Wind has the biological function of cell growth, transmission of information, motion of the body and respiration.
Vital or Bile psora is based on anger, and mediates reactions to all aversive stimuli. Bile has the biological function of thermic regulation, digestion and metabolic transformation.
Nervous or Phlegm psora is based on doubt and is involved in the processes that finally generate the emotion of anxiety, and entails the inhibition of prepotent conflicting behaviours, the engagement of risk assessment processes, and the scanning of memory and the environment to help resolve concurrent goal conflict, which is experienced subjectively as worry, apprehension and the feeling that actions may lead to a bad outcome. Phlegm has the biological function of lubrication in joints and regulates the immune system.