An aspirin overdose can lead to a range of symptoms. These symptoms may include ringing in the ears, hearing loss, confusion, rapid breathing, nausea, vomiting, diarrhea, and abdominal pain. In severe cases, aspirin overdose can cause seizures, hallucinations, fever, dehydration, and even coma. Additionally, aspirin overdose can lead to respiratory alkalosis, a condition where there is too much carbon dioxide being removed from the body. This can cause symptoms like dizziness, light-headedness, and numbness or tingling in the hands and feet. If you suspect an aspirin overdose, seek immediate medical attention as it can be life-threatening [2][3][4].

Sources:
[2] https://www.merckmanuals.com/home/injuries-and-poisoning/poisoning/aspirin-poisoning
[3] https://www.mountsinai.org/health-library/poison/aspirin-overdose
[4] https://www.drugpatentwatch.com/p/tradename/ASPIRIN