Allergy to class/drug
Premature neonates (<28 do) (increased absorption)
Uncontrolled seizure disorder
Norwegian (crusted) scabies
Skin conditions that may increase systemic absorption (weeping surface, inflamed skin etc)
Caution with:
HIV infection
Prior seizure
Prior head trauma
CNS tumor
Severe hepatic cirrhosis
Excess alcohol use or abrupt withdrawal from alcohol or benzos
Concomitant use of meds that lower seizure threshold
Weight <50kg
HIV infection
Prior seizure
Prior head trauma
CNS tumor
Severe hepatic cirrhosis
Excess alcohol use or abrupt withdrawal from alcohol or benzos
Concomitant use of meds that lower seizure threshold
Weight <50kg
Lindane
Naphthalene
Psyllium
Trientine
Selenium sulfide
Nitrous oxide
Methyl isocyanate
Iodoquinol