Which signs require urgent reporting after starting a new medication?

• A. Mild headache only.
• B. Severe allergic reaction (hives, swelling, trouble breathing), chest pain, and other life-threatening symptoms.
• C. Nausea that resolves in a few minutes.
• D. Occasional dizziness that improves with rest.

Answer: (B)

When you start a new medication, recognize signs that signal a potential medical emergency. Severe allergic reactions—such as hives, swelling of the face or throat, trouble breathing—along with chest pain and other life-threatening symptoms require urgent reporting because they could indicate anaphylaxis or another serious, rapidly progressing issue that needs immediate treatment. These are not just uncomfortable; they can be life-threatening and actions should be taken right away, such as calling emergency services or going to the nearest emergency department.

In contrast, milder reactions like a headache that is only mild or brief, nausea that resolves quickly, or occasional dizziness that improves with rest are common, usually less dangerous side effects. They should be monitored and discussed with a clinician, especially if they persist, worsen, or appear soon after starting the medication, but they don’t typically require immediate emergency reporting. The main idea is to separate potentially dangerous, urgent reactions from harmless, self-limiting ones so you know when to seek immediate help.