Most cases of thrush resolve in a number of days with over-the-counter treatment, but in some cases the infection can return.

On this week's Ask the GP on Lunchtime Live, one listener asked Dr Niall Breen if recurrent thrush merits a trip to the doctor.

"I think if it's very recurrent, I would [see the GP]," Dr Breen said.

"The doctor will do a swab and most of the time that's self-done by the patient if they're uncomfortable with the GP doing it.

"So, get a swab and confirm the diagnosis if it's recurrent."

Antifungal prescription medication of Fluconazole Tablet for thrush. Alamy

While thrush is not considered an STI, if the patient is experiencing recurrent infections, Dr Breen said they should ask their partner to get tested as well.

"It's also very important to get an appraisal of their medications - certain medications will make some people more prone to getting thrush as well," he said.

"If they're not on any medicines, if they're not sexually active and they're getting a lot of recurrent thrushes, I would definitely go to the GP."

Dr Breen said people with Type 2 diabetes often present with vaginal or penile thrush, which is why it is important to see your doctor for recurrent thrush.

Immunity

Elsewhere on the segment, another listener asked Dr Breen how they can boost immunity after several viruses and a chest infection.

"There isn't really anything you can take to boost your immunity," Dr Breen said.

"It sounds like this person’s immune system has been reacting appropriately to what has been a barrage of illnesses over the winter period."

Dr Breen said however that this person should consider going to the GP for some standard blood tests if they cannot shift their symptoms over time.

"If things are going on for five, six weeks and you’re still getting lots in infections then sometimes it’s no harm to get a very basic set of bloods with your doctor," he said.

Dr Breen said he would recommend a blood test for older patients in particular.

Feature image: Dr Niall Breen (l) and an image of a person pouring pills into their hand (r, via Alamy)