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[Treatment with low-dose isotretinoin is effective for patients with moderate inflammatory acne]
1docent, dermatologi, Sahlgrenska akademin, Göteborg.
Abstract:
The recommended isotretinon dose for severe (nodulocystic) acne has for almost 40 years been 0,5-1,0 mg/kg/day reaching a cumulative dose of 120-150 mg/kg. Moderately severe acne has been treated with long-term systemic antibiotics, which carries a risk for microbial resistance in skin och intestinal flora. The Swedish Medical Products Agency approved in 2014 that patients with acne recurring after oral antibiotics given for at most two 3-month periods can be considered for isotretinoin treatment, but the dose regimen was not changed. These patients have moderate inflammatory acne (papulopustular) and studies over the recent years have shown that treatment with low-dose isotretinoin, 0,2-0,4 mg/kg/day, until acne recovery and independent of cumulative dose is effective. There are less frequent and less severe mucocutaneous side-effects, reduced risk of acne flares and it is considerably less expensive than traditional dosing. The duration of treatment is however prolonged, and the pregnancy prevention program must be followed.
Insights
Low-dose isotretinoin (0.2-0.4 mg/kg/day) effectively treats moderate inflammatory acne, offering a safer and more cost-effective alternative to traditional high-dose regimens or long-term antibiotics.
Area of Science:
- Dermatology
- Pharmacology
Background:
- Traditional isotretinoin dosing (0.5-1.0 mg/kg/day) is established for severe acne.
- Long-term antibiotic use for moderate acne risks microbial resistance.
- Guidelines now permit isotretinoin for antibiotic-resistant acne, but dosing remained unchanged.
Purpose of the Study:
- To evaluate the efficacy of low-dose isotretinoin for moderate inflammatory acne.
- To compare low-dose isotretinoin treatment outcomes with traditional methods.
Main Methods:
- Treatment with low-dose isotretinoin (0.2-0.4 mg/kg/day) until acne recovery.
- Monitoring efficacy and side-effects in patients with moderate inflammatory acne.
Main Results:
- Low-dose isotretinoin demonstrated effectiveness in achieving acne recovery.
- Treatment resulted in fewer and less severe side-effects compared to high-dose regimens.
- Reduced risk of acne flares and lower treatment costs were observed.
Conclusions:
- Low-dose isotretinoin is an effective and safer treatment for moderate inflammatory acne.
- This approach offers a cost-effective alternative to traditional high-dose isotretinoin and long-term antibiotics.
- Prolonged treatment duration requires adherence to pregnancy prevention programs.
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