Which condition may be observed due to incorrect fluid replacement with hypotonic fluids in patients with diabetic ketoacidosis?

A. Hirsutism, or excessive hair growth, is more commonly associated with conditions such as polycystic ovary syndrome (PCOS) or Cushing’s syndrome, rather than Addison’s disease.
B. Hyperpigmentation is a characteristic sign of Addison’s disease. Due to insufficient cortisol production in the adrenal glands, there is an increase in melanocyte-stimulating hormone (MSH), which leads to darkening of the skin, particularly in areas exposed to friction like elbows, knees, and the face.
C. Purple striations are a common finding in Cushing’s syndrome, which results from excessive cortisol production. They are not typically seen in Addison's disease.
D. Intention tremors are more commonly associated with neurological conditions, such as Parkinson’s disease, rather than Addison’s disease, which primarily affects the adrenal glands.

A. Cerebral edema is the most dangerous complication associated with the administration of hypotonic fluids in patients with diabetic ketoacidosis (DKA). This occurs because hypotonic fluids cause rapid shifts in fluid and electrolytes, which can lead to swelling of the brain, especially in children. The risk is heightened if fluids are replaced too quickly.
B. Polyuria is a common symptom of diabetic ketoacidosis due to high blood glucose levels and osmotic diuresis, but it is not caused by hypotonic fluid administration.
C. Hypokalemia is a potential risk in DKA but typically arises from the shift of potassium from the extracellular to intracellular space during treatment, especially with insulin administration, not from the use of hypotonic fluids.
D. Metabolic acidosis is a hallmark of diabetic ketoacidosis itself and is caused by the accumulation of ketones. It is not caused by hypotonic fluid replacement.