A 45-year-old female who recently traveled has been diagnosed with a form of hepatitis that is self-limiting and transmitted via the fecal-oral route. Which type of hepatitis is she most likely to have?

The most likely diagnosis for the patient in this scenario is Hepatitis A. This virus is known for being self-limiting and it is primarily transmitted through the fecal-oral route. This mode of transmission typically occurs in situations where proper sanitation and hygiene are compromised, such as during travel to areas with inadequate water treatment or food handling practices.

Hepatitis A is characterized by an acute onset of symptoms, which can include fatigue, nausea, abdominal discomfort, and jaundice, but it does not lead to chronic infection. Generally, the body will clear the virus without the need for specific treatment, aligning with the self-limiting nature mentioned in the case.

Other types of hepatitis, like Hepatitis B and Hepatitis C, typically involve blood-borne transmission rather than fecal-oral, and can lead to chronic infections. Hepatitis D is dependent on the presence of Hepatitis B for its infection and is also not transmitted through the fecal-oral route. Thus, the characteristics of Hepatitis A make it the best fit for this patient's condition.