Topical steroid withdrawal syndrome in a mother and son: A case report.

Topical corticosteroids are first-line treatment for many dermatoses, and are generally considered safe and effective. However, topical steroid withdrawal syndrome can result from use of topical corticosteroids, and this condition is not well-known among physicians. This article reports a mother and son whose presentations of topical steroid withdrawal syndrome following the discontinuation of prolonged, high-potency topical corticosteroid use were nearly identical. This report adds to the growing body of evidence that topical steroid withdrawal syndrome is its own entity, rather than an exacerbation of the underlying dermatosis, and adds to the few pediatric reports of topical steroid withdrawal syndrome. Management for both patients involved topical corticosteroid discontinuation; however, it took approximately 2 years before the majority of their topical steroid withdrawal syndrome manifestations resolved. Increased awareness surrounding this condition is essential to facilitate topical steroid withdrawal syndrome prevention and diagnosis and to decrease topical corticosteroid phobia and increase patient-physician trust.

Occupational photoallergic contact dermatitis to thiourea in a firefighter.

Thioureas are a relatively uncommon cause of allergic contact dermatitis and a rare cause of photoallergic contact dermatitis. They are primarily used as vulcanization accelerators in the production of neoprene, and common sources of exposure include gloves, shoe insoles, wet suits, and orthopedic braces. We report a multifactorial case of severe episodic photoallergic contact dermatitis to thiourea in a 29-year-old firefighter. Multiple sources of neoprene exposure were identified, including a firefighting mask, continuous positive airway pressure strap, and hockey helmet.

Magnesium amino-bis(phenolato) complexes for the ring-opening polymerization of rac-lactide.

Magnesium compounds of tetradentate amino-bis(phenolato) ligands, Mg[L1] (1) and Mg[L2] (2) (where [L1] = 2-pyridyl-N,N-bis(2-methylene-4-methoxy-6-tert-butylphenolato), and [L2] = dimethylaminoethylamino-N,N-bis(2-methylene-4-methyl-6-tert-butylphenolato)) were prepared. The proligands, H2[L1] and H2[L2] were reacted with di(n-butyl)magnesium in toluene to give the desired compounds in high yields. Compounds 1 and 2 exhibit dimeric structures in solutions of non-coordinating solvents as observed by NMR spectroscopy and in the solid state as shown by the single crystal X-ray structure of 2. These compounds exhibit good activity for rac-lactide polymerization in solution and in molten lactide.