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A pharmacist can help with fungal nail infections
Speak to a pharmacist if the look of your nail bothers you or it's painful.
They may suggest:
antifungal nail cream – it can take up to 12 months to cure the infection and doesn't always work
nail-softening cream – used for 2 weeks to soften the nail so the infection can be scraped off
The infection is cured when you see healthy nail growing back at the base."
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Treatment from a GP
Your GP can prescribe antifungal tablets. You'll need to take these every day for up to 6 months.
Tablets can have side effects including:
headaches
itching
loss of taste
diarrhoea
You can't take antifungal tablets if you're pregnant or have certain conditions. They can damage your liver.
Badly infected nails sometimes need to be removed. It's a small procedure done while the area is numbed (under local anaesthetic).
Other treatment
Laser treatment uses laser to destroy the fungus.
You'll have to pay for it as it's not covered by the NHS. It can be expensive. There's little evidence to show it's a long-term cure as most studies only follow patients for 3 months."
https://www.nhs.uk/conditions/fungal-nail-infection/