Nail Fungus (Onychomycosis) Treatment in Kuwait
Fungal infection accounts for more than half of all nail disease — which means close to half of thickened or discoloured nails are something else entirely, such as psoriasis or chronic trauma. That is why I take a nail sample before prescribing a drug you will be taking for months.
What you should know
- Nail fungus is common: its estimated prevalence is around 5.5% and it accounts for over half of all nail disease. Equally, that means a deformed nail is not automatically a fungal one.
- More than 75% of cases are caused by dermatophytes, chiefly Trichophyton rubrum; moulds account for about 10% of cases and yeasts are less common. Which organism it is changes which drug I choose.
- The nail sample must be taken before any treatment starts, because oral therapy runs for months and needs the organism identified first — and starting the drug ruins the culture result afterwards.
- Risk factors include age over 65, diabetes, immunosuppression, athlete's foot, psoriasis, repeated nail trauma, excessive sweating, and use of communal facilities such as pools and gyms.
- Nails grow slowly: even after the fungus is killed, the nail can take a year or longer to grow out completely. The real marker of success is healthy nail emerging at the base, not the deformity vanishing at once.
- Relapse is real: roughly 20–25% of treated cases relapse, and the risk rises with older age, poor circulation, diabetes, immunosuppression, and severe or mixed infection.
Treatment options
- Topical treatment alone is appropriate only in mild disease affecting less than 50% of one or two nails, with the matrix spared. Options include amorolfine 5% and ciclopirox 8% lacquers, while efinaconazole 10% and tavaborole 5% are applied once daily for roughly 48 weeks.
- Oral terbinafine is first line for dermatophyte nail infection: 6 weeks for fingernails and 12 weeks for toenails. The Cochrane review (48 studies, 10,200 participants) found high-quality evidence of superiority over placebo, with a risk ratio for clinical cure of 6.00.
- Terbinafine outperforms itraconazole: in the L.I.ON. study, mycological cure at 72 weeks was 76% versus 38% after 12 weeks of treatment. Cochrane supports the same ranking with moderate-quality evidence.
- Safety comes before the prescription: liver function is checked before starting tablets, and adverse events were recorded in about 10.5% of terbinafine recipients — most often gastrointestinal upset, headache and taste disturbance. Terbinafine has fewer drug interactions than the azoles.
- For laser, evidence of effectiveness compared with systemic therapy is lacking. It may temporarily improve appearance, but I do not advise paying for it as a substitute for tablets.
Separate curing the fungus from curing the look of the nail. The high mycological cure figures are measured a few months out; the long-term picture is more modest. In the Icelandic extension of the L.I.ON. study, at five years complete cure was 35% with terbinafine versus 14% with itraconazole, with a 23% mycological relapse rate. So I set an explicit expectation: a very good chance of clearing the fungus, a smaller chance of a nail that looks entirely normal again. And prevention — treating athlete's foot, drying the feet, changing shoes and socks — matters as much as the tablets.
Practical advice for patients
The practical points from the patient sheet I hand out in clinic.
- Do not share shoes, socks, towels or nail clippers with others.
- Keep a separate towel for your feet; wash hands after touching infected nails or toes.
- Change and wash socks daily; choose 100% cotton when worn for long hours.
- Dry your feet and between the toes well after every wash (a hair dryer on the cool setting is fine).
- Air your feet regularly; wear breathable shoes; alternate between two pairs so each dries for 24 h; an antifungal powder/spray inside shoes helps.
- Use your own personal tools for manicure and pedicure at salons.
- Keep feet clean and trim nails regularly.
- Never walk barefoot in gyms, swimming pools and communal showers.
- Check your blood sugar — fungal infections are more common in diabetes.
- Complete the full treatment course: nails grow slowly and may take 12–18 months to look normal after cure.
Frequently asked questions
Is nail fungus cured permanently?
The fungus is usually cleared, but 'complete cure' — meaning a normal-looking nail — is less common. At five years in the extended L.I.ON. study, complete cure was 35% with terbinafine versus 14% with itraconazole, and mycological cure 46% versus 13%. These are honest numbers rather than treatment failure: they reflect how slowly nails grow and how easily the surrounding skin re-infects them.
How long before I see a result?
The drug course itself is relatively short: 6 weeks for fingernails and 12 weeks for toenails with oral terbinafine, or around 48 weeks for some topical products. Appearance lags well behind — a toenail may need a year or more to grow out fully. Watch the area nearest the cuticle: healthy nail appearing there is the first genuine sign that treatment is working.
Does it come back after successful treatment?
Yes, it can. About 20 to 25% of treated cases relapse, and infection may return a year or more after it cleared. The biggest source of reinfection is untreated athlete's foot and contaminated footwear, so I treat the foot skin alongside the nail and insist on drying between the toes and changing socks daily.
Is laser an alternative to tablets?
I do not regard it as one. Evidence comparing laser with systemic therapy is lacking, whereas high-quality evidence supports oral terbinafine. Laser may be worth discussing for someone who cannot take tablets because of liver disease or drug interactions, but it should be presented honestly as a weakly supported option, not an equivalent treatment.
Walk-in clinic – no appointment needed
My private clinic at Kuwait Hospital (Sabah Al-Salem) — walk-in, Sunday to Thursday, 8 am – 4 pm. Direct assessment and a treatment plan built around your case.
Ask on WhatsAppPatient advice sheets
Short, practical sheets to read before or after your visit.