Module 4: Occupational Asthma - Lecture (Continued)

5. PATHOPHYSIOLOGY:

5.1 Types of occupational allergens:

5.2 Method of action:

5.3 Types of reactions:

(See the Figure)

  1. Immediate: Max reaction (after 10-30 min); Recovery (within 1-2h);
  2. Late - Early late: Max reaction (after 1-2h)
    Late late: Max reaction (after 4-8h);
  3. Dual - Combination;
  4. Atypical - progressive, square-waved, prolonged immediate.

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Postgraduate Diploma in Occupational Health (DOH) - Modules 3 – 5: Occupational Medicine & Toxicology by Prof Rodney Ehrlich & Prof Mohamed Jeebhay is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
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