11. Is it Influenza or a Cold? Common; can become severe Mild to moderate; hacking cough Chest Discomfort, Cough Sometimes Common Sore Throat Sometimes Common Stuffy nose/sneezing Usual; at the start Never Extreme Exhaustion Usual; can last up to 2 -3 weeks Sometimes Fatigue, Weakness Usual; often severe Slight General Aches, Pains Common Rare Headache Usually; high; last 3-4 days Rare Fever Flu Cold Symptoms