Is there evidence of the kidney damage in this patient? What is the possible mechanism of this pathology?

What is the cause of hyperhydration in this case: a decrease in water excretion or an increase in water retention?

Explain the mechanisms of edema in this patient.

Case 4

A 7-year-old boy developed a progressive swelling of the soft palate with a swallowing difficulty, and then asphyxia after he had drunk mango juice. The mucosal membrane in the swelled area is hyperemic without tenderness; a moderate increase in eosinophils is seen in the blood. The patient's body temperature is normal. The patient has a family history of bronchial asthma attacks in his senior sister.

Questions:

Do you think that edema in this case is the result of ordinary inflammation?

What is the cause of edema in this patient?

Explain the pathogenesis of the given pathology.

Does this type of edema belong to the life-threatening states?