Psoriasiform Dermatitis Following Kawasaki Disease: A Case Report and Literature Review.

Kawasaki disease (KD) is an idiopathic acute inflammatory illness that commonly affects children in Northeast Asian countries. In this case report, a psoriasiform eruption appeared on the face and extremities following the onset of KD. A review of previous reports identified 38 cases of psoriasiform eruptions following KD, typically appearing 4 days to 2 months after the onset of KD, unlike other skin manifestations associated with the disease.

Inflammation switches the chemoattractant requirements for naive lymphocyte entry into lymph nodes.

Sustained lymphocyte migration from blood into lymph nodes (LNs) is important for immune responses. The CC-chemokine receptor-7 (CCR7) ligand CCL21 is required for LN entry but is downregulated during inflammation, and it has been unclear how recruitment is maintained. Here, we show that the oxysterol biosynthetic enzyme cholesterol-25-hydroxylase (Ch25h) is upregulated in LN high endothelial venules during viral infection.