The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
Preliminary reading: What is a pattern? The concept of Cold The concept of Dampness The Spleen in Chinese Medicine
Key attributes
Chinese name: 寒湿困脾 Pinyin name: Hán Shī Kùn Pí
Pattern nature: Full
Causes
Precursor patterns: Spleen Qi Deficiency
Common causes: Exposure to exterior Dampness
Diagnosis
Common symptoms: Edema Nausea No thirst Lassitude Tiredness and eight other symptoms
Pulse type(s): Slippery (Hua), Slow (Chi)
Tongue description: Pale with a sticky white coating
Treatment
Treatment principle: Resolve Dampness, expel Cold
Common formulas: Ping Wei San
This is a description of the pattern in its acute stage, when the Spleen is invaded by exterior Dampness. The pattern can also become chronic, in which case the tongue would be more Pale and the pulse partly Weak or Soggy.
What causes the characteristic feeling of heaviness is the fact that Dampness obstructs the muscles. It also impairs the the clear Yang from ascending to
the head, hence the feeling of heaviness in the head as well.
The feeling of fullness is caused by Dampness preventing the normal movement of Qi. This also causes the nausea as Dampness prevents Stomach-Qi from descending (Qi becomes Rebellious).
What causes the sweet taste in the mouth (or sometimes the absence of taste) is because the Spleen opens into the mouth: disruption to its normal behavior will have repercussions in the mouth.
Lastly Dampness is heavy and has a tendency to drop downwards; this is what causes the excessive white vaginal discharge we see in some cases.
Precursor patterns: Cold-Damp invading the Spleen can derive from Spleen Qi Deficiency
Exposure to exterior Dampness: This can be due from the weather or from someone's living conditions (e.g. living in a damp basement flat).
Diagnosing a pattern in Chinese Medicine is no easy feat and should be left to professional practitioners. In particular one has to know how to differentiate between different types of pulses and tongue coatings, shapes and colors as well as learn to read from a long list of seemingly unrelated symptoms.
Pulse type(s): Slippery (Hua) or slow (Chi)
Tongue description: Pale with a sticky white coating
Main symptoms: Edema Nausea No thirst Lassitude Tiredness Loose stools Poor appetite Dull-pale complexion White vaginal discharge Sweet taste in the mouth Abdominal and epigastric fullness Feeling of cold in the epigastrium Feeling of heaviness of the head and body
Diagnosis commentary: The key characteristic symptoms here are the feeling of abdominal fullness, the feeling of heaviness and the sticky white tongue coating.
Resolve Dampness, expel Cold
The top herbs in Ping Wei San are Black Atractylodes Rhizomes (Cang Zhu), Houpu Magnolia Bark (Hou Pu) and Tangerine Peel (Chen Pi)
Source date: 1051 AD
Number of ingredients: 4 herbs
Key actions: Dries Dampness. Improves the Spleen's transportive function. Promotes the movement of Qi. Harmonizes the Stomach.
Ping Wei San is a 4-ingredient Chinese Medicine formula. Invented in 1051 AD, it belongs to the category of formulas that transform Dampness and harmonize Stomach.
Besides Cold-Damp invading the Spleen, Ping Wei San is also used to treat Obstruction Of the Spleen By Dampness with Liver Qi Stagnation or Oedema.
Since the key cause for this pattern is exposure to exterior dampness, the single best lifestyle change you can make is to avoid prolonged exposure to dampness.
If left untreated Cold-Damp invading the Spleen can lead to Kidney Yang Deficiency
If left untreated Cold-Damp invading the Spleen can lead to Liver Qi Stagnation