What is the earliest sign of an electrolyte disorder?

What is the earliest sign of an electrolyte disorder?

• A. Paresthesia
• B. Seizures
• C. Confusion
• D. Coma

Answer: (A)

The first thing an electrolyte disturbance tends to affect is nerve and muscle excitability. Small shifts in circulating ions quickly alter the threshold for action potentials, so sensory nerves commonly show changes early. Paresthesias—tingling or numbness, often around the mouth and in the fingers—reflect this initial hyperexcitability. As the imbalance becomes more pronounced, more serious CNS symptoms can appear, such as confusion, seizures, and eventually coma. So recognizing tingling or numbness as an early neuromuscular sign helps identify an electrolyte problem before progression to more severe manifestations.

The first thing an electrolyte disturbance tends to affect is nerve and muscle excitability. Small shifts in circulating ions quickly alter the threshold for action potentials, so sensory nerves commonly show changes early. Paresthesias—tingling or numbness, often around the mouth and in the fingers—reflect this initial hyperexcitability. As the imbalance becomes more pronounced, more serious CNS symptoms can appear, such as confusion, seizures, and eventually coma. So recognizing tingling or numbness as an early neuromuscular sign helps identify an electrolyte problem before progression to more severe manifestations.