What side effects should I report immediately during Melanoma treatment

Side Effects to Report Immediately During Melanoma Treatment

This is an important question—knowing which side effects need urgent attention can help keep you safe during treatment. Let me explain what to watch for and why these matter.

Why Immediate Reporting Matters

Different melanoma treatments work in different ways, and some can cause serious side effects that need quick medical attention. Your care team needs to know about certain symptoms right away so they can:

• Adjust your treatment if needed
• Provide supportive care to manage symptoms
• Prevent complications from getting worse

Side Effects Requiring Immediate Reporting

SEVERE ALLERGIC REACTIONS (especially with immunotherapy)

• Difficulty breathing or shortness of breath
• Chest pain or pressure
• Severe swelling of face, lips, or throat
• Severe rash or hives covering large areas of your body

SIGNS OF INFECTION

• Fever (temperature above 100.4°F/38°C)
• Chills or sweating
• Severe fatigue or weakness
• Signs of infection at injection or IV sites (redness, warmth, pus, increasing pain)

SEVERE BLEEDING OR BRUISING

• Unusual bruising without injury
• Blood in urine or stool
• Vomiting blood
• Nosebleeds that won't stop

NEUROLOGICAL SYMPTOMS (especially with checkpoint inhibitors like pembrolizumab or nivolumab)

• Severe headache
• Confusion or difficulty concentrating
• Weakness or numbness in arms or legs
• Vision changes
• Difficulty speaking or slurred speech
• Seizures

SEVERE GASTROINTESTINAL SYMPTOMS

• Severe abdominal pain
• Persistent vomiting (unable to keep fluids down)
• Severe diarrhea (more than 7 stools per day)
• Blood in stool

HEART OR LUNG PROBLEMS

• Chest pain or pressure
• Rapid or irregular heartbeat
• Severe shortness of breath
• Persistent cough

SEVERE SKIN REACTIONS

• Blistering or peeling skin covering large areas
• Severe itching that prevents sleep
• Signs of infection in skin lesions

LIVER PROBLEMS

• Yellowing of skin or eyes (jaundice)
• Dark urine
• Pale stools
• Severe abdominal pain in upper right area

KIDNEY PROBLEMS

• Significant decrease in urination
• Blood in urine
• Severe swelling in legs or feet

Why These Matter in Melanoma Treatment

According to the NCCN Guidelines for Patients: Melanoma (2025), melanoma treatment often includes immunotherapy drugs like checkpoint inhibitors (pembrolizumab and nivolumab), targeted therapies, radiation therapy, or T-VEC injections. These treatments work powerfully against cancer but can affect your immune system and other body systems, which is why monitoring is so important.

What to Do

Call your doctor or cancer center immediately if you experience any of these symptoms. Don't wait for your next scheduled appointment. Many cancer centers have:

• On-call nurses available 24/7
• Emergency hotlines
• Instructions for after-hours care

Have ready:

• Your treatment schedule and medications
• When symptoms started
• How severe they are
• Any other symptoms you've noticed

Questions to Ask Your Care Team

1. What is the best way to reach you if I have side effects outside of office hours?
2. Which side effects are most common with MY specific treatment plan?
3. Should I go to the emergency room or call you first if I experience [specific symptom]?
4. Are there any warning signs specific to my treatment that I should watch for?
5. What over-the-counter medications are safe for me to take?
6. Should I keep a symptom diary, and if so, what should I track?

Important Note

Some side effects develop gradually, while others come on suddenly. It's better to report something that turns out to be minor than to wait and have a serious problem develop. Your healthcare team would rather hear from you and reassure you than have you suffer in silence.

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This information is for educational purposes only. Always consult your healthcare team for personalized medical advice and decisions.