Tri-doshas of Ayurveda: According to Ayurveda, there are three basic humorous which maintain the health.
Any imbalance in these three humors leads to illness. They are Vaata (wind), Pitta (bile) and Kapha (phlegm).
The Vaata element produces windy complaints like neurological disorders, joint pains, etc. The Pitta element is concerned with heat, inflammation, fever, liver and gall bladder problems. The Kapha element is concerned with most of the respiratory ailments, colds, asthma, etc.
The planets and the corresponding tatwas are as follows.
Moon Kapha & Vaata
Mercury All the three
Venus Excess of Vaata & Kapha
Signs and Body parts:
Mithuna Shoulders, neck and upper chest
Kanya Umbilical region (waist & intestines)
Vrischika Private parts (external genitalia)