The nurse is evaluating a 7-month-old infant brought in for excessive crying and vomiting.
Which finding supports a diagnosis of intussusception?

Choice A rationale

Limiting fluid intake is generally not indicated for atopic dermatitis unless there is a specific comorbid condition warranting fluid restriction. Maintaining adequate hydration is usually encouraged for overall skin health.

Choice B rationale

Promoting peeling of dead skin is not a primary goal in managing atopic dermatitis. The focus is on reducing inflammation, relieving itching, and maintaining skin hydration and barrier function, not necessarily on exfoliation.

Choice C rationale

Maintaining skin integrity and preventing infection are the most important goals in the care of a child with atopic dermatitis. The chronic inflammation and itching can lead to skin breakdown, increasing the risk of secondary bacterial or viral infections. Nursing interventions focus on gentle skin care, emollients, and managing itching.

Choice D rationale

Alcohol-based lotions should be avoided in children with atopic dermatitis as alcohol can dry and irritate the skin, exacerbating the condition and impairing skin integrity. Emollients that are fragrance-free and hypoallergenic are preferred to maintain skin hydration.

Choice A rationale

A tick is the arachnid responsible for transmitting Lyme disease. The characteristic rash associated with Lyme disease is erythema migrans, often described as a "bull's-eye" rash, which can appear days to weeks after a bite from an infected blacklegged tick (Ixodes scapularis or Ixodes pacificus). Spending time in wooded areas increases the risk of tick exposure.

Choice B rationale

Spiders are arachnids, but they are not the primary vector for Rocky Mountain spotted fever. Rocky Mountain spotted fever is caused by the bacterium Rickettsia rickettsii and is transmitted to humans through the bite of infected American dog ticks (Dermacentor variabilis) or Rocky Mountain wood ticks (Dermacentor andersoni). The rash associated with this disease typically starts on the wrists and ankles and spreads centrally.

Choice C rationale

Mites are arachnids, and certain types cause scabies, a contagious skin infestation characterized by intense itching and a pimple-like rash due to the burrowing of the Sarcoptes scabiei mite into the skin. While hiking in wooded areas could potentially lead to exposure to some types of mites, the rash of scabies has a distinct presentation and transmission pattern different from Lyme disease.

Choice D rationale

Chiggers are also mites (arachnids) that can be found in wooded areas. Their bites cause chigger dermatitis, characterized by intensely itchy red welts or bumps where the larvae have attached to the skin. While the history of hiking is relevant to potential exposure to chiggers, the rash and the associated disease are distinct from the erythema migrans rash of Lyme disease. .