
Proper allergy treatment starts with an accurate diagnosis. But distinguishing between allergies and other ailments can be hard. For example, all the conditions below can cause sneezing, congestion, and a runny nose. To identify your ailment, focus on the hallmark symptoms of each as well as the other characteristics that can help differentiate the diseases.
| Hallmark symptoms | Other possible symptoms | Duration | |
|---|---|---|---|
| Allergies |
throat |
|
Usually weeks to months. Symptoms worsen when exposed to offending substances or at certain times of the year.
|
| Cold |
or white nasal discharge
|
aches
|
3 days to 2 weeks
|
| Flu |
(39º C) or higher |
|
2 to 5 days for initial severe symptoms; cough and fatigue can linger 2 to 3 weeks longer
|
| Sinusitis |
face, eyes, or upper teeth discharge last 10 days or more
|
night |
Up to 12 weeks; less-common chronic form can linger much longer
|
| Bronchitis |
Cold-like symptoms that develop into a deep, painful cough that produces yellow or green phlegm. Often worse at night.
|
constricted
|
3 to 5 days for fever and most other symptoms; cough may continue for several weeks
|