What Causes Rough Dry Skin On The Toes?

i am 26 years ole,
male,
68 KG wight,
basically i have no major historical medical problems ,
recently i had a rough skin on my smallest toe on my left foot, i consulted a physician and she said its symptoms look like axima but the thing is that i don't feel the need to scratch that place, she said that could be axima + fungal infection, we did a fungal test for nail and skin, result is negative for both