Clinical Scenario:
A 7-year-old child with confirmed HIV infection is brought with poor weight gain, persistent oral thrush and recurrent episodes of pneumonia over the past year. He has had chronic diarrhea for 5 weeks and has progressively become less active. On examination, his weight is below the 5th percentile, and oral examination shows extensive creamy-white plaques that bleed slightly on removal.
According to the WHO clinical staging of HIV infection in children aged 5–14 years, what is the most appropriate clinical stage?
A. Stage 1
B. Stage 2
C. Stage 3
D. Stage 4
E. Cannot be staged
Correct answer & Explanation:
Explanation
Correct answer: C. Stage 3
According to the WHO clinical staging system for children aged 5–14 years, this child has features consistent with Stage 3 HIV disease.
The important clinical findings are:
- Persistent oral candidiasis — a Stage 3 condition
- Recurrent bacterial pneumonia — Stage 3
- Persistent diarrhea — Stage 3
- Poor weight gain and progressive functional decline, supporting significant HIV-related disease
The distinction from Stage 4 is important. Stage 4 includes severe HIV-related conditions such as Pneumocystis jirovecii pneumonia, extrapulmonary cryptococcosis, HIV encephalopathy, Kaposi sarcoma and disseminated mycobacterial disease.
The diagnosis of clinical stage should be based on the most advanced qualifying clinical condition rather than simply counting the number of symptoms.
Reference:
World Health Organization. WHO case definitions of HIV for surveillance and revised clinical staging and immunological classification of HIV-related disease in adults and children. WHO. WHO HIV clinical staging guidance
