A 5-year-old boy develops hepatosplenomegaly and lymphadenopathy since early onset childhood with high spiking fevers and been treated with anti-inflammatory drugs. You suspect macrophage activation syndrome (MAS). The BEST test that distinguishes MAS from a flare of the primary disease is

A 5-year-old boy develops hepatosplenomegaly and lymphadenopathy since early onset childhood with high spiking fevers and been treated with anti-inflammatory drugs. You suspect macrophage activation syndrome (MAS). The BEST test that distinguishes MAS from a flare of the primary disease is

A 3-week-old male baby develops a rash involving the face and periorbital area after exposure to sunlight; you suspect neonatal lupus. The NEXT step of management of the baby is

Recurrent parotitis is the MOST common manifestation in children with primary Sjogren syndrome between 9-10 years of age.

The BEST treatment for a 5-year-old boy with Henoch-Schonlein purpura (HSP) presenting with acute onset palpable purpura over the lower extremities and buttocks is

The MOST common clue of physical abuse in children is