Medical causation of Bronchial Asthma by a single episode of inhaling high concentration of an irritant chemical was first recognised as a separate entity 12 years ago.
The reporting clinicians coined the term Reactive Airways Dysfunction Syndrome (RADS). Its companion disorder Reactive Upper-airways Dysfunction Syndrome (RUDS) was named later, and the pathological mechanisms for de novo induction of respiratory illness by inhaled substances is still being elucidated, .
A single episode of inhaling high concentration of a toxic chemical may cause permanent Asthma or Rhinitis (nasal allergy)
These conditions are rare in comparison with the temporary provocation or worsening of symptoms of pre-existing Bronchial Asthma and Allergic Rhinitis (nasal allergy).
A common feature of these diseases is enhanced responsiveness to not only substances triggering an allergic response but also chemical irritants.
Personal Injury clients often confuse this phenomenon with the much commoner triggering of pre-existing respiratory illness
Quantum may justify litigating if an initiating exposure is compensable, whereas damages will rarely be sufficient if pre-existing diagnosis of symptoms of Asthma or Rhinitis are documented in the previous medical records.
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