Persistent generalized lymphadenopathy, is caused by

JIPMER Nursing Officer-2017

Medical Surgical Nursing

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Appeared in: JIPMER Nursing Officer-2017

Explanation

Persistent Generalized Lymphadenopathy (PGL) is a hallmark sign of Human Immunodeficiency Virus (HIV) infection, often appearing in the early stages.
PGL is defined as lymph nodes larger than 1 cm in two or more non-connected sites (outside the groin area) that persist for over three months.
This occurs due to a hyperplastic response of the lymphoid tissue to chronic HIV replication, as the immune system is in a constant state of activation.
While other conditions can cause lymphadenopathy, the persistent and generalized nature is highly characteristic of HIV.

Option A: Herpes Simplex Virus (HSV) typically causes localized lymphadenopathy, not generalized. The swelling is usually near the site of the herpetic lesions (e.g., neck nodes for oral herpes, groin nodes for genital herpes).
Option B: Herpes Zoster Virus (HZV), the cause of shingles, results in localized lymphadenopathy that is confined to the lymph nodes draining the specific dermatome affected by the rash.
Option C: Hepatitis A Virus (HAV) is a hepatotropic virus, meaning it primarily infects the liver. While a mild, reactive lymphadenopathy can occur during the acute illness, it is not a cause of persistent, generalized lymphadenopathy.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Etiology of Persistent Generalized Lymphadenopathy (PGL) as background academic context rather than a clinical decision trigger.
Nurses must be able to differentiate between localized and generalized lymphadenopathy during patient assessment, as the latter can be a key sign of systemic diseases like HIV.
When assessing a patient with HIV and PGL, it is crucial to palpate nodes for size, tenderness, consistency, and mobility to establish a baseline and monitor for changes that could indicate a superimposed infection or malignancy (like lymphoma).
What if? If the enlarged lymph nodes in a patient with HIV suddenly become hard, fixed (non-movable), and rapidly increase in size, this is a red flag. It is no longer consistent with benign PGL and suggests a malignant transformation (e.g., lymphoma), requiring an urgent referral for biopsy.

How to Approach the Question

First, identify the key clinical sign in the question stem: 'Persistent generalized lymphadenopathy'.
Break down the term: 'Persistent' means long-lasting (months), and 'generalized' means affecting multiple, widespread areas of the body.
Evaluate the options, which are all viruses, based on their typical clinical presentations.
Recall that HSV and HZV cause localized infections with corresponding localized lymph node swelling.
Recall that HAV is a liver-specific virus.
Recognize that a chronic, systemic viral infection that constantly engages the immune system is the most likely cause. HIV fits this description perfectly, as PGL is a classic sign of the body's prolonged fight against the virus.

Concept Tested & Keywords

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E6 Medicine Harrison 22e Part 1 pp. 1645-1647, 1615-1617, 1541-1543