Match the following infectious diseases with their assessment findings

infectious disease

Varicella

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Scarlet Fever

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Measles

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Fifth's Disease

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Corticosteroids are potent anti-inflammatory and immunosuppressive agents that inhibit leukocyte migration, cytokine production, and T-cell activation. Although therapeutically useful in autoimmune and inflammatory conditions, they significantly impair host defense mechanisms, increasing susceptibility to opportunistic bacterial, viral, and fungal infections.

Rationale:

A. Corticosteroids suppress the immune response by reducing lymphocyte proliferation, inhibiting macrophage activity, and decreasing cytokine signaling. This impaired cell-mediated immunity reduces the body’s ability to fight opportunistic pathogens, making infections more likely even with low-virulence organisms.

B. Decreasing swelling and vasodilation reflects the anti-inflammatory effect of corticosteroids but does not directly explain infection susceptibility. Inflammation reduction occurs, but the key mechanism for opportunistic infections is immune suppression, not vascular changes.

C. Corticosteroids typically cause hyperglycemia, not hypoglycemia, by promoting gluconeogenesis and reducing peripheral glucose uptake. Although hyperglycemia can contribute to infection risk, the primary mechanism remains immunosuppression rather than blood glucose reduction.

D. Osteoporosis is a long-term adverse effect of corticosteroid therapy due to bone resorption, not a cause of increased infection risk. It reflects altered calcium metabolism and osteoblast inhibition, unrelated to immune defense mechanisms against pathogens.

Oligoarticular juvenile idiopathic arthritis is a chronic autoimmune inflammatory disorder affecting children, characterized by persistent synovial inflammation limited to a small number of large joints. It commonly involves asymmetric joint disease with risk of uveitis due to immune-mediated ocular involvement.

Rationale:

A. Joint symptoms appearing only after strenuous activity suggest mechanical or overuse injury, not autoimmune inflammation. Juvenile idiopathic arthritis causes persistent synovitis with stiffness, particularly in the morning or after rest, rather than activity-triggered pain.

B. Oligoarticular juvenile idiopathic arthritis is defined by involvement of four or fewer joints, commonly large joints such as the knee or ankle. It is characterized by asymmetric swelling, stiffness, and chronic synovial inflammation due to autoimmune-mediated joint damage.

C. Daily high spiking fevers with a salmon-colored rash indicate systemic juvenile idiopathic arthritis (Still disease), not oligoarticular type. This subtype involves systemic inflammation with cytokine release causing fever patterns and evanescent rash during febrile episodes.

D. Involvement of five or more joints suggests polyarticular juvenile idiopathic arthritis, which typically affects small joints such as the hands and wrists. This subtype resembles adult rheumatoid arthritis and involves more widespread symmetric joint inflammation.