Hello and welcome to HCM.
Thanks for putting up your query over here.
I would like to know whether you have got
diabetes mellitus.Agressive
fungal nail infection more common with diabetes mellitus.
If I were your treating doctor,I would recommend,
-Oral antifungals like fluconazole/
griseofulvin for few months.Topical antifungals wont treat the infection.
-Soak the feet in warm water and dry it.Dont let moisture to remain for long by avoiding wearing socks or shoes for long.Dont apply nailpolish over the nail.
-Keep diabetes within control by medications,diet,regular exercise and timely follow ups with treating doctor.
So visit to dermatologist/physician is necessary for the above mentioned pescription drug.
Nail psoriasis als needs to be ruled out.
Hope this information helps.
Thanks and regards.