Pharm: Topical Corticosteroids Flashcards
Ointments
-water in oil -good lubricant -facilitate heat retention (never put on burns) -decreased water loss -semi-occlusive (enhances drug penetration and absorption) -most potent** vehicle (b/c its occlusive) -best for dry/thick, hyperkeratotic lesions -avoid hairy and intertriginous areas -greasy
Cream
-oil in water -can be washed off w/ water -good lubricating qualities -vanish into skin -less potent than ointment but more than lotions -good for exudative inflammation and intertriginous areas -no occlusive properties
lotions/aerosols/solutions
-least greasy and occlusive -good for hairy and large areas -penetrate easy and leave little residue
foams
-pressurized collections of gaseous bubbles in liquid film -spread readily and easy to apply -good for inflammed skin and scalp dermatoses -cosmetically acceptable -depend on vehicle delivery (expensive)
gels
-oil in water with alcohol in the base (evaporate quickly) -they dry in a thin, greaseless, nonstaining film -efficient for hairy areas and acne -dry quickly and can be applied to scalp -best for exudative inflammation -helpful for drying of oozing lesions (as long as not broken skin)
purpose of an occlusive dressing
increase steroid absorption
Know this chart
contraindications to topical steroids
- acne vulgaris
- scabies
- warts
- fungal infections
- viral infections
factors that effect the degree of absorption of topical steroids
- skin integrity: absorbed more at areas of inflammation and desquamation
- pts age: more readily through infants skin
- vehicle used
- use of occlusive dressing
- the area of body on which it is applied: thin skin more permeable than thick
Which group of steroids is the most potent and the least potent?
- group 1 = most potent
- group 7 = least potent
super high potent topical steroids
clobestasol
high potency (group 2) steroids
halcinonide (halog 0.1%)
high potentcy (group 3) steroid
triamcinolone acetonide 0.5% cream or ointment
medium potentcy (group 4) steroid
triamcinolone acetonide 0.1% cream or ointment
low potency (group 5) steroid
flucocinolone acetonide 0.01% solution
what is the least potent topical steroid?
hydrocortisone