What are the symptoms of digoxin toxicity?

Digoxin toxicity is characterized by specific symptoms, particularly those affecting the gastrointestinal and visual systems, as well as the heart. Nausea and vomiting are very common gastrointestinal symptoms seen in digoxin toxicity due to its action on the central nervous system and the stimulation of the vomiting center. Blurred vision, including color changes such as seeing yellow or green halos around objects, is also typically associated with digoxin toxicity because digoxin affects the optical pathways in the brain.

Arrhythmias are another critical complication of digoxin toxicity; they can occur due to the drug's effects on cardiac conduction and excitability. Since digoxin has a narrow therapeutic index, even small increases in dosage can lead to toxicity, manifesting in these distinctive symptoms.

The other answer choices contain symptoms that do not directly correlate with digoxin toxicity. Each of those symptoms tends to be associated with different conditions or medications, which is why they are not representative of what is seen with digoxin overdose.