Scabies: Infestation of the skin by the human itch mite, Sarcaptes scabies. The initial symptom of scabies are red, raised bumps that are intensely itchy. A magnifying glass will reveal short, wavy lines of red skin, which are the burrows made by the mites. Treatment is with any of several scabicide medications.

Onychomycosis makes the nails look white and opaque, thickened, and brittle. Those at increased risk for developing onychomycosis include:

• People with diabetes;
• People with disease of the small blood vessels (peripheral vascular disease); and
• Older women (perhaps because estrogen deficiency increases the risk of infection); and
• Women of any age who wear artificial nails (acrylic or "wraps").

Artificial nails increase the risk for onychomycosis because, when an artificial nail is applied, the nail surface is usually abraded with an emery board damaging it, emery boards can carry infection, and water can collect under the artificial nail creating a moist, warm environment favorable for fungal growth.

An alternative name is dermatophytic onychomycosis.