Today it is seen in people of all ages. The incidence increases in the elderly and is higher in men. Toenail are infected much more often then fingernails. People with nail infections often are infected at other sites such as the groin and on the palms. Predisposing factors .
Fungi thrive in a warm moist environment such as exits in shoes.
Fungi are present on the wet floors of communal exercise facilities. HIV infection, immunosuppressive therapies, systemic antibiotics and chemotherapeutic agents all encourage fungal growth. Thick nail can case pain and functional limitation especially when compressed by shoes. Secondary bacterial infections cause swelling of the surrounding and underlying ski Psychosocial impact . Comparatively speaking patients with fungal nail infections have poorer general health, difficulty with social interactions and a poor self image.