Clinical staging systems for chronic toxic encephalopathy

                                                            

Severity

WHO 1

Type2

Features

 

Mild

Organic affective

syndrome

1

 

Symptoms only.

E.g. Fatigue, memory impairment, difficulty concentraing

Moderate

Mild chronic toxic encephalopathy

2A

 

Sustained personality or mood change

Emotional instability, reduced impulse control and motivation

2B

Impairment of intellectual function:

Reduced concentration, memory, learning capacity

 

Severe

Sever chronic

Toxic

encephalopathy

3

Dementia

Global deterioration in intellectual function and memory

 

1 World Health Organisation 1985

2 Baker E,  1986

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Postgraduate Diploma in Occupational Health (DOH) - Modules 3: Occupational Medicine & Toxicology (Basic) by Profs Mohamed Jeebhay and Rodney Ehrlich, Health Sciences UCT is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 2.5 South Africa License. Major contributors: Mohamed Jeebhay, Rodney Ehrlich, Jonny Myers, Leslie London, Sophie Kisting, Rajen Naidoo, Saloshni Naidoo. Source available from here. For any updates to the material, or more permissions beyond the scope of this license, please email healthoer@uct.ac.za or visit www.healthedu.uct.ac.za. Last updated Jan 2007.
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