What condition is characterized by fever, rash, and diarrhea following a transplant?

• A. Graft vs. host disease
• B. Acute rejection
• C. Infection
• D. Chronic rejection

Answer: (A)

The condition characterized by fever, rash, and diarrhea following a transplant is indeed graft versus host disease (GVHD). This occurs when immune cells from the transplanted tissue, usually from a bone marrow or stem cell transplant, recognize the recipient's body tissues as foreign and mount an immune response against them.

GVHD typically presents with a triad of symptoms: fever, skin rash, and gastrointestinal issues such as diarrhea. The skin rash may range from a mild erythematous rash to more severe involvement, and the diarrhea can lead to significant fluid loss and electrolyte imbalances. These symptoms arise as donor T-cells attack the host's epithelial cells, especially in the skin and gut.

Acute rejection, while another potential post-transplant complication, primarily involves the recipient's immune system responding against the transplant and doesn't typically present with this specific symptom triad. Instead, it may cause other signs such as organ dysfunction but is less characteristically associated with diarrhea and rash in the same way as GVHD.

Infection can also lead to fever and diarrhea but usually does not manifest with a rash unless there are specific infectious etiologies, such as viral infections, making these less defining of the post-transplant experience when related to GVHD.

Chronic rejection