Reactive airway disease isn’t the same as reactive airways dysfunction syndrome (RADS). The names, acronyms and symptoms are similar, but it’s important to keep them separate. RAD isn’t an official clinical diagnosis, and it doesn’t have a precise definition.
Reactive airways dysfunction syndrome (RADS) is an asthma-like condition. RADS can occur after a single exposure to very high levels of an irritant. Or it can happen after repeated exposures to low or moderate levels of an irritant.
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While the acronyms are similar, reactive airway disease (RAD) and reactive airways dysfunction syndrome (RADS) are not the same. [1]
RADS is a respiratory condition linked to work or environment. It needs quick diagnosis and expert treatment. RADS stands for Reactive Airway Dysfunction Syndrome. It is characterized by the sudden onset of asthma-like symptoms. Exposure to irritants or corrosive substances can trigger RADS.
In 1985, this characteristic postchemical injury asthma-like syndrome was given formal recognition by the clinical observations of Brooks et al 1 who coined the term “Reactive Airways Dysfunction Syndrome” (RADS). RADS is a distinct subset of irritant-induced asthma.
RADS describes wheezing, coughing, and shortness of breath. It happens when a person’s airways are exposed to too much corrosive gas fumes or vapors.
According to Jeff Miller's Earliest Known Uses of Some of the Words of Mathematics, the term kernel was first used in this meaning by Pontryagin (in translation by Lehmer) in the slightly broader context of group homomorphisms. It doesn't say why Pontryagin or Lehmer chose that particular word though.