The athlete's foot worsened and progressed to a resistant nail infection.

I didn't have athlete's foot even in the military, but after wearing dress shoes in society, I suffered from an unexpected case of athlete's foot. Moreover, the athlete's foot worsened, leading to ingrown toenails and severe foot fungus, making it hard to endure the itching. Taking oral antifungal medication would make it easier to cure the ingrown toenails, but I couldn't take it because of the medication I was already on, so the condition didn't fully heal and kept recurring. However, this time, the doctor used a liquid antifungal treatment to thin the thickened toenails, allowing the liquid medication to penetrate easily, and finally, after about ten years, I was able to see the effects of treatment.

Furthermore, by drying the feet after washing, which has a 50% treatment effect for athlete's foot, I was able to see improvements in the treatment of resistant toenails and plantar athlete's foot.