This points to the fact, that nervous, unbalanced, hysterical subjects are very likely to come into the sphere of action of the drug, and the intolerance of pressure is to be read mainly as a tactile hypersensitiveness. Associated with it in a strong desire for air: patients who feel suffocated when windows are shut, who cannot endure heat well, and long for cool fresh breeze, whose symptoms are worse in the summer–these are often found to call for Lachesis by other indications.
(3) Relief of distressing symptoms from the onset of a discharge. Dysmenorrhoeal pains come before the flow and are at once relieved when it appears or severe headache is relieved when a nasal catarrh begins. It is also true that if an expected discharge does not appear normally, symptoms of pain or discomfort begin or are aggravated if already present. The explanation of this probably lies in the fact that great vasomotor instability is a characteristic effect of the serpent poisons.
Consequently local congestions and hyperaemias are common, and possibly the onset of the free discharge relieves these. The vasomotor instability is expressed in the provings by local flushings, rushes of blood to the head and face. These and allied nervous symptoms make Lachesis, a remedy of great value at the climacteric, specially at the onset of that period when the menses becoming delayed and when the non-appearance of the monthly discharge results in symptoms of discomfort and distress.
It will be out of place here to deal with the details of symptoms of the drugs from serpent poisons, for which a book of Materia Medica is sufficient. We would now speak of the Therapeutic uses of the serpent poisons in a very outline.
