Viral infections usually cause severe headache, neck pain, fever, and a cold, but in some cases, they can indicate a more serious condition that needs urgent medical attention. You should see a doctor as soon as possible to ensure it is not something serious. Meanwhile, you can rest, drink plenty of fluids, and take paracetamol to relieve fever and pain, but avoid any other medications until a healthcare professional advises you.

For your 94-year-old bedridden father, giving Nam Cold Tablet (containing cetirizine, nimesulide, and pseudoephedrine) requires caution. While cetirizine is generally safer, it can cause drowsiness or confusion in the elderly. Nimesulide is usually not recommended for older adults due to risks like stomach bleeding and kidney or liver problems. Pseudoephedrine may raise blood pressure and heart rate, which can be dangerous for elderly patients, especially those with heart issues. Therefore, it is crucial to consult your father’s doctor before giving this medicine to ensure safety and appropriate treatment. Avoid self-medicating elderly, bedridden patients without professional guidance.