Use this as a general guide, not a diagnosis:
• More consistent with a cold
• Gradual start over 1–2 days
• Stuffy nose, sneezing, scratchy throat
• Mild fatigue, little to no fever
• More consistent with flu
• Sudden onset within hours
• Fever, chills, body aches, heavy fatigue
• Headache, dry cough, significant weakness
• More consistent with allergies
• Itchy eyes, frequent sneezing
• Clear runny nose, post-nasal drip
• Symptoms that flare with exposure patterns
• Typically no fever