Which word parts do you need to build a medical word that means abnormal condition of nail fungus?

The answer is onychomycosis.

This is an abnormal condition of fungus in nails. This is an infection that cam involve the nail unit which include the matrix, nailbed or plate. This can cause pain , discomfort and may produce physical limitation. At first, the appearance of nails will change this can affect how people stand, walk as the disease progress. Paresthesia, pain and discomfort can be expected if not treated. Patients can have antifungal medications or  can have laser treatment or nail avulsion procedure.