Non-Formulary Use Criteria: 1. Onychomycosis use: Does patient have a diabetic or circulatory disorder evidenced by absence of pedal pulses and/or extremity hair loss due to poor circulation, or abnormal monofilament exam demonstrating loss of sensation? 2. Note: Onychomycosis requests meeting criteria will be approved for terbinafine (Lamisil) 250 mg daily for 6 to 12 weeks. Formulary Restrictions: NOT APPROVED FOR ONYCHOMYCOSIS