IL	Interleukin
Th	T helper cell
INF-a	Interferon alpha
TNF-a	Tumor necrosis factor alpha
HPA	Hypothalamic–Pituitary–Adrenal
FDA	US Food and Drug Administration
PASI	Psoriasis Area and Severity Index
CDLQI	Children’s Dermatology Life Quality Index
AhR	Aryl hydrocarbon receptor
NB-UVB	Narrow band ultraviolet-B
UVA	Ultraviolet-A
MTX	Methotrexate
IBD	Inflammatory bowel disease
PGA	Physician global assessment
SC	Subcutaneous
EMA	European Medicines Association
JAK	Janus kinase