What could indicate medication side effects that require immediate attention?

Severe symptoms such as difficulty breathing are a critical indicator of medication side effects that require immediate medical attention. This symptom could signify a serious allergic reaction, such as anaphylaxis, or other severe respiratory issues that can develop rapidly. Difficulty breathing affects oxygen intake and can lead to dire health consequences if not addressed promptly.

Other symptoms may indicate side effects but are generally less urgent. Mild headache and stomach upset, increased appetite and insomnia, and dizziness and fatigue can often be managed with adjustments to medication or supportive care. They do not typically pose an immediate threat to a person's health, making them less critical than the severe symptoms associated with difficulty breathing. Recognizing the severity of symptoms is crucial in ensuring timely and appropriate medical intervention.