Which of the following is a common symptom of viral Leishmaniasis?

Fatigue is indeed a common symptom associated with viral Leishmaniasis. This condition is caused by parasitic infection rather than a virus, leading to systemic effects in the body, including a general sense of tiredness and lethargy. The immune response to the infection can result in prolonged fatigue as the body diverts energy to fight off the parasites.

While the other symptoms listed can occur in various diseases or conditions, they are not typically associated with Leishmaniasis. High blood pressure and rapid heartbeat might suggest other underlying health issues or responses to stress or infection but are not directly linked to viral Leishmaniasis. Joint stiffness can arise from a variety of causes, including inflammatory conditions or physical exertion, but it is not a hallmark symptom of this disease. Thus, fatigue stands out as a significant indicator of the body's response to the parasitic infection related to Leishmaniasis.