0.5% malathion in 78% isopropanol was recently approved by the FDA for treatment of head lice.

A new needle-free system (cool.click) has been approved by the FDA for subcutaneous delivery of Saizen (recombinant somatotropin - Serono). Somatotropin is used for long-term treatment of children with growth failure due to inadequate secretion of endogenous growth hormone. Children with growth hormone deficiency require injections daily or several times weekly for many years.

Our May 24, 2004 article on use of the immune response modulator imiquimod (Aldara) for treatment of actinic keratoses stated that no systemic effects have been detected. A physician reader objected, stating that he had developed fatigue while using the cream and had heard from dermatologists that other patients had also reported systemic effects.

The FDA has approved vemurafenib (Zelboraf – Genentech), a kinase inhibitor, for treatment of unresectable or metastatic melanoma with the BRAF V600E mutation, which is found in 30-60% of melanomas. An FDA-approved test can detect the mutation in DNA from melanoma tissue.

Golodirsen (Vyondys 53 — Sarepta), an antisense oligonucleotide, has received accelerated approval from the FDA for treatment of Duchenne muscular dystrophy (DMD) in the ~8% of patients who have mutations of the dystrophin gene that are amenable to exon 53 skipping. It is the first drug to be approved for this indication and the third to be approved for treatment of DMD; the antisense oligonucleotide eteplirsen (Exondys 51) and the oral corticosteroid deflazacort (Emflaza) were approved earlier.

Difelikefalin (Korsuva – Vifor), an IV kappa opioid receptor (KOR) agonist, has been approved by the FDA for treatment of moderate to severe pruritus associated with chronic kidney disease (CKD) in adults on hemodialysis. It is the first drug to be approved for this indication and the first KOR agonist to become available in the US. Difelikefalin has not been studied in patients on peritoneal dialysis.

The FDA has approved Vtama (Dermavant), a 1% cream formulation of the aryl hydrocarbon receptor (AhR) agonist tapinarof, for treatment of adults with plaque psoriasis. It is the first AhR agonist to be approved by the FDA.

The FDA has approved the interleukin (IL)-23 antagonist risankizumab-rzaa (Skyrizi – Abbvie) for treatment of moderate to severe plaque psoriasis in adults. Risankizumab is the third IL-23 antagonist to be approved for this indication; guselkumab (Tremfya) and tildrakizumab (Ilumya) were approved earlier.

View the Comparison Table: Some Drugs for Plaque Psoriasis

A high-intensity, narrow-band blue light (ClearLight -Lumenis) approved by the FDA for treatment of moderate inflammatory acne vulgaris has been featured in some stories in fashion magazines. This review describes the etiology and treatment of acne, as well as the mechanism of action, clinical studies, adverse effects, dosage and cost of the drug.