A scratchy throat and a nagging cough are two of the most common reasons people book a doctor’s appointment — and in the vast majority of cases, they’re caused by an ordinary viral infection that clears up on its own within one to two weeks.

Here’s a practical rundown of what usually causes these symptoms, what you can do at home, and when it’s time to get proper medical attention.

Most coughs, sore throats, and runny noses are part of a common upper respiratory infection — essentially a cold or flu-like illness. These are viral, caused by things like rhinovirus, coronavirus, influenza, RSV, or adenovirus, and they spread easily in air-conditioned spaces, on public transport, and in shared indoor settings.

The typical pattern: a sore throat and dry cough show up first, followed within a couple of days by a blocked or runny nose, mild fever, and body aches. Symptoms tend to peak around day three and improve steadily after that, though a lingering cough can stick around for two to three weeks even after everything else has resolved.

Only a small share of cases are bacterial and need antibiotics — most notably strep throat. Habits like smoking or vaping, along with conditions such as asthma, allergies, or acid reflux, can make a cough last longer than usual.

– Viral colds (the overwhelming majority of cases)

– Influenza A or B

– COVID-19

– Allergic rhinitis with postnasal drip (often worse at night)

– Strep throat (bacterial)

– Acute bronchitis or an asthma flare-up

– Irritation from smoking, vaping, reflux, or haze

For a straightforward cold or flu-like illness, self-care goes a long way:

– Stay hydrated with warm fluids — water, tea, or clear soup — to soothe your throat

– Gargle salt water a few times a day

– Try honey in warm water before bed for cough relief (skip this for children under one year old)

– Use paracetamol or ibuprofen for fever and aches

– Run a humidifier and avoid direct air-con blasts

– Wear a mask around others and rest at home until you’re feeling better

Many mild cases can be managed with a teleonsultation, which is useful for confirming your symptoms are typical, getting medication advice, and deciding whether you need time off work or school. A remote visit is generally appropriate for:

– Sore throat, hoarse voice, congestion, or a cough without breathing difficulty

– A mild fever that responds to paracetamol or ibuprofen

– A cough that’s lasted under three weeks in someone who’s otherwise well

– Breathlessness at rest, chest pain, bluish lips, or low oxygen readings

– Severe, one-sided throat pain with drooling or trouble swallowing

– Coughing up blood, or a fever above 39.5°C that won’t come down with medication

– A cough lasting more than three weeks

– Symptoms in a baby under three months old, a frail elderly person, or someone with a weakened immune system

– Wheezing that isn’t responding to usual inhalers

It’s worth knowing that most coughs and sore throats are viral, so antibiotics won’t help and can even cause unnecessary side effects or contribute to antibiotic resistance. Doctors typically reserve antibiotics for cases where a bacterial infection — like strep throat or bacterial sinusitis — is clinically suspected, often using standardized scoring criteria to make that call.

Most coughs, sore throats, and runny noses are minor, viral, and self-limiting — rest, fluids, and over-the-counter symptom relief are usually all you need. But keep an eye out for the warning signs above, and don’t hesitate to get in-person care if something feels off. When in doubt, a quick consultation (in person or via telehealth) can help confirm you’re on the right track or catch something that needs closer attention.