General: Systemic absorption of topical corticosteroids has caused reversible
hypothalamic-pituitary-adrenal (HPA) axis suppression with the potential for
glucocorticosteroid insufficiency after withdrawal of treatment. Manifestations
of Cushing's syndrome, hyperglycemia, and glucosuria can also be produced in
some patients by systemic absorption of topical corticosteroids while on treatment.
Conditions which augment systemic absorption include the application of the
more potent steroids, use over large surface areas, prolonged use, and the addition
of occlusive dressings.
Therefore, patients applying a topical steroid to a large surface area or to
areas under occlusion should be evaluated periodically for evidence of HPA axis
suppression. If HPA axis suppression is noted, an attempt should be made to
withdraw the drug, to reduce the frequency of application, or to substitute
a less potent steroid.
Recovery of HPA axis function is generally prompt upon discontinuation of topical
corticosteroids. Infrequently, signs and symptoms of glucocorticosteroid insufficiency
may occur requiring supplemental systemic corticosteroids. For information on
systemic supplementation, see prescribing information for those products.
Pediatric patients may be more susceptible to systemic toxicity from equivalent
doses due to their larger skin surface to body mass ratios. (See PRECAUTIONS-Pediatric
Use.)
If irritation develops, Luxiq should be discontinued and appropriate
therapy instituted. Allergic contact dermatitis with corticosteroids is usually
diagnosed by observing a failure to heal rather than noting a clinical exacerbation,
as with most topical products not containing corticosteroids. Such an observation
should be corroborated with appropriate diagnostic patch testing.
In the presence of dermatological infections, the use of an appropriate antifungal
or antibacterial agent should be instituted. If a favorable response does not
occur promptly, use of Luxiq should be discontinued until the infection
has been adequately controlled.
Information for Patients: Patients using topical corticosteroids should
receive the following information and instructions:
- This medication is to be used as directed by the physician. It is for external
use only. Avoid contact with the eyes.
- This medication should not be used for any disorder other than that for
which it was prescribed.
- The treated scalp area should not be bandaged or otherwise covered or wrapped
so as to be occlusive unless directed by the physician.
- Patients should report to their physician any signs of local adverse reactions.
- As with other corticosteroids, therapy should be discontinued when control
is achieved. If no improvement is seen within 2 weeks, contact the physician.
Laboratory Tests: The following tests may be helpful in evaluating patients
for HPA axis suppression:
ACTH stimulation test
A.M. plasma cortisol test
Urinary free cortisol test
Carcinogenesis, Mutagenesis, and Impairment of Fertility: Long-term
animal studies have not been performed to evaluate the carcinogenic potential
or the effect on fertility of betamethasone valerate. Betamethasone was genotoxic
in the in vitro human peripheral blood lymphocyte chromosome aberration
assay with metabolic activation and in the in vivo mouse bone marrow
micronucleus assay.
Pregnancy Category C: Corticosteroids have been shown to be teratogenic
in laboratory animals when administered systemically at relatively low dosage
levels. Some corticosteroids have been shown to be teratogenic after dermal
application in laboratory animals. There are no adequate and well-controlled
studies in pregnant women. Therefore, Luxiq should be used during pregnancy
only if the potential benefit justifies the potential risk to the fetus.
Drugs of this class should not be used extensively on pregnant patients, in
large amounts, or for prolonged periods of time.
Nursing Mothers: Systemically administered corticosteroids appear in
human milk and could suppress growth, interfere with endogenous corticosteroid
production, or cause other untoward effects. It is not known whether topical
administration of corticosteroids could result in sufficient systemic absorption
to produce detectable quantities in breast milk. Because many drugs are excreted
in human milk, caution should be exercised when Luxiq is administered
to a nursing woman.
Pediatric Use: Safety and effectiveness in pediatric patients have not
been established. Because of a higher ratio of skin surface area to body mass,
pediatric patients are at a greater risk than adults of HPA axis suppression
and Cushing's syndrome when they are treated with topical corticosteroids. They
are therefore also at greater risk of adrenal insufficiency during and/or after
withdrawal of treatment. Adverse effects including striae have been reported
with inappropriate use of topical corticosteroids in infants and children.
Hypothalamic-pituitary-adrenal (HPA) axis suppression, Cushing's syndrome,
linear growth retardation, delayed weight gain, and intracranial hypertension
have been reported in children receiving topical corticosteroids. Manifestations
of adrenal suppression in children include low plasma cortisol levels and an
absence of response to ACTH stimulation. Manifestations of intracranial hypertension
include bulging fontanelles, headaches, and bilateral papilledema.
Administration of topical corticosteroids to children should be limited to
the least amount compatible with an effective therapeutic regimen. Chronic corticosteroid
therapy may interfere with the growth and development of children.
Last updated on RxList: 9/29/2008