Sniffling, sneezing, feeling run-down? Colds, flus, and seasonal allergic reactions can all share signs, making it powerful to find out the trigger to your malaise.
But there are some telltale variations. Determining what’s ailing you may assist you greatest deal with it and get well extra shortly — and stop spreading it to others.
“This query comes up yearly because the seasons change,” says Ken Redcross, MD, an internal-medicine doctor in New Rochelle, N.Y., and a spokesperson for the homeopathic medication firm Boiron USA.
“Colds and the flu are each brought on by viruses and are contagious, which implies they’ll unfold simply from individual to individual. Allergy symptoms, however, are brought on by an overactive immune system reacting to triggers comparable to pollen, mud, or pet dander, and they aren’t contagious,” he explains. “All three may cause congestion, fatigue, and a runny nostril, which makes them straightforward to confuse.”
So how do you inform them aside?
“It may be troublesome to differentiate between them, however there are a number of methods you may inform,” says Purvi Parikh, MD, an allergist and immunologist with Allergy & Bronchial asthma Community and a medical assistant professor within the Division of Medication at NYU Grossman Faculty of Medication.
Whereas seasonal allergic reactions could trigger most of the similar signs as a chilly or flu, they don’t make you “sick” within the conventional sense of getting an an infection, she explains.
“Allergy symptoms normally final for much longer, usually weeks to months, and sometimes comply with a predictable seasonal schedule. Essentially the most traditional allergic indicators are itchy eyes, nostril, or throat,” Parikh says.
“Viruses are likely to convey extra full-body signs, comparable to aches, fatigue, and generally fever or abdomen ache,” she provides. “A cough with a virus may additionally produce coloured mucus or phlegm, which is rare with allergic reactions.”
Viral infections like a chilly, flu, and even COVID-19 are typically short-lived, operating their course in about seven to 10 days.
Sneezing, a runny nostril, or a sore throat may be current in each allergic reactions and viruses — and these signs also can set off bronchial asthma signs, explains Parikh. “So, listening to the length and whether or not you are feeling that itchiness [of allergies] is the clearest approach to determine it out.”
Nonetheless, sure signs may be revealing, says Redcross.
“The important thing distinction is that allergic reactions normally don’t trigger fever or physique aches,” he notes. “Colds are likely to develop step by step, whereas the flu strikes immediately and with extra depth, usually together with fever, chills, and muscle ache. Allergy symptoms additionally convey extra itching, notably within the eyes, nostril, and throat.”
One additional warning: Seasonal allergic reactions could make you extra inclined to viral and bacterial diseases because of persistent irritation and an overstimulated immune response, Parikh explains.
“Allergy symptoms also can disrupt sleep and trigger stress, which predisposes you to sickness,” she says. “Those that undergo from bronchial asthma because of their seasonal allergic reactions are additionally extra prone to catch upper-respiratory viruses and infections. As a result of lung involvement, these respiratory diseases are usually extra extreme for bronchial asthma victims.”
In case you aren’t sure what’s ailing you — and whether or not it’s contagious to others — Parikh recommends utilizing a speedy flu or COVID check, “as even physicians may be fooled, pondering one thing is allergic reactions when it could be a virus.”
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