Merc.Sol

Merc.Sol.: How does Instability develope:
Healthy organism has defense mechanism and reactivity Merc.Sol. is an anarchist and revolutionary, This base of his positiveness, Merc. has lack of reactive power, coupled with an instability or inefficiency of function. Which enables it to create a stable, efficient equilibrium upon exposure to the many physical and emotional stimuli in the envoirment,
Wavering in its functions, The patient without adequate defense, resulting in a pathological condition, absorbs virtually all stimuli.
Lack of defensive power results in sensitive to everything. Therefore Merc. get aggravate by heat, cold, wet weather, change of weather, warmth of bed, perspiration, exertion, various food,.
In Repertory 55 rubrics in favour of agg. Merc.Sol. has very NARROW RANGE OF TOLERANCE to every thing. 
There is weakness and instability in emotional expression, weeping alternate with laughing, Here symptoms are not manifested with hysteria (ignatia). But it is because of mechanical instability.
Restless:
As we know Merc. is not solid and a liquid, little touch it start shaking, unstable, little movements it is shaking though liquid and heavy than other piqued it is unstable. (Stann. Met., Helonios, Baptisia, with weakness of reactive power, but not with the instability and inefficiency.).
Impulse:
Merc. patient becomes sensitive to every kind of impulse, Impulse to strike, to smash things, to kill someone over a merely slight offence, or even killed to love ones. (Merc. sol., Platina, Nux-Vom.).
Perspiration:
Easy perspiration and not being relieved, Perspiration is a normal process to cool the body, when it is over-heated, Perspiration excretes toxic products, Merc. with little stimulus perspiration more, salivation excesss.

Tremor:
Tremor run through remedies, Great weakness and trembeling of limbs, This is due to instability.