The symptoms of strychnine poisoning usually appear within twenty minutes of the ingestion of a poisonous dose, starting with an uneasy sensation, stiffness at the back of the neck, twitching of the muscles and a feeling of impending suffocation.
Internally, dilute sulphuric acid is used in poisoning by alkalis as a neutralizing agent.
He also showed that the bactericidal action takes place in the absence of food materials, thus proving that it is not merely a poisoning effect of the altered medium.
Chronic poisoning by antimony is very rare, but resembles in essentials chronic poisoning by arsenic. In its medico-legal aspects antimonial poisoning is of little and lessening importance.
The non-sensitiveness of a cell to a toxic body when brought into immediate relationship cannot, however, be explained further than by saying that the disintegrative changes which underlie symptoms of poisoning are not brought about.
Chronic opium poisoning by the taking of laudanum - as in the familiar case of De Quincey - need not be considered here, as the hypodermic injection of morphine has almost entirely supplanted it.
This condition is not so frequently seen in the more highly differentiated cells, but may follow necrosis of secreting cells, as is found in the kidney, in corrosive sublimate poisoning and in chronic nephritis.
It is a physiological antagonist of chloral hydrate, morphine and physostigmine, and may be given in poisoning by these drugs.
Accidental poisoning from henbane occasionally occurs, owing sometimes to the apparent edibility and wholesomeness of the root.
The symptoms of poisoning by belladonna or atropine are dealt with above.