Final answer:
Systemic reactions like pupil constriction and involuntary urination indicate poisoning, requiring details about the substance and intake for proper assessment, where understanding hypersensitivity reactions provides insight into the body's response.
Step-by-step explanation:
In a primary assessment for poisoning, early confirmation that the poisonous substance is causing systemic reactions can be indicated by symptoms such as constriction of pupils, profuse salivation, convulsions, and involuntary urination and defecation. These signs suggest exposure to a nerve agent or other toxic substance that affects the nervous system, requiring immediate medical attention. Additional information needed to assess possible damage from swallowing radioactive material includes the type of radioactive substance, the quantity ingested, the time elapsed since ingestion, and the present symptoms of the individual. Furthermore, understanding the specific hypersensitivity reactions, such as type I and IV, and autoimmune responses can help medical professionals anticipate and manage potential systemic effects from exposure to various poisons, allergens, or toxic agents.