In the council of planets, Mercury has the role of a prince.
One can perceive the favourable or unfavourable position of Mercury, with respect to one's particular birth chart, based on the following "symptoms":
Benefic Effects: Good physique, good orator, clever business skills, sharp memory, wise & analytical mind, good networking skills.
Malefic Effects: Sore throat, baldness, unreasonable decisions, discontinuity in studies, dental problems, over spitting, weak smelling power, weak mathematics (poor calculations), need to exhibit knowledge.
It is difficult to judge or ascertain in which category a person exists. It is not usual that every benefic or malefic character would be effecting a person at the time. There can be mixed effects too. To reduce the malefic effects, the under stated remedies can be considered suitable: