| AGEP | acute generalized exanthematous pustulosis |
| AMPs | antimicrobial peptides |
| BAs | bile acids |
| BMI | Body Mass Index |
| BSA | Body Surface Area |
| CCL | chemokine ligand |
| CFU | colony forming unit |
| CRP | C-reactive protein |
| CXCL | C-X-C Motif Chemokine Ligand |
| DHA | docosahexaenoic acid |
| DLQI | Dermatology Life Quality Index |
| DMRDs | disease-modifying anti-rheumatic drugs |
| DNA | deoxyribonucleic acid |
| EPA | eicosapentaenoic acis |
| F/B | Firmicutes/Bacteroidetes ratio |
| FDA | the United States Food and Drugs Administration |
| FMT | fecal microbiota transplant |
| GM-CSF | granulocyte-macrophage colony-stimulating factor |
| HaCaT | Cultured Human Keratinocytes |
| HMP | Human Microbiome Project |
| IBD | inflammatory bowel disease |
| iFABP | intestinal fatty acid binding protein |
| IgA | immunoglobuline A |
| IGA | Investigator’s Global Assessment |
| IL | interleukin |
| IMQ | imiquimod |
| INF-γ | interferon gamma |
| JAK/STAT | Janus-kinase - signal transducer and activator of transcription |
| MCFAs | medium-chain fatty acids |
| MCSF | macrophage colony-stimulating factor |
| mRNA | messenger RNA |
| miRNA | microRNA |
| NFkB | nuclear factor kappa-light-chain-enhancer of activated B cells |
| n-3 PUFAs | n-3 polyunsaturated fatty acids |
| PASI | Psoriasis Area and Severity Index |
| PCR | polymerase chain reaction |
| PMI | Psoriasis-Microbiome Index |
| PsA | Psoriatic arthritis |
| rRNA | ribosomal ribonucleic acid |
| SCFAs | short-chain fatty acids |
| S100A | S100 calcium-binding protein |
| TGF-β | transforming growth factor-β |
| TMA | trimethylamine |
| TMAO | trimethylamine-N-oxide |
| TNF-α | tumor necrosis factor α |
| UV | ultraviolet |
| VEGF | vascular endothelial growth factor |
| VEGFA | gene for vascular endothelial growth factor A |