There are many human leukocyte antigen (HLA) alleles associated with conditions of or affecting the human integumentary system
| Condition | Associated HLA allele(s) |
|---|---|
| Fixed drug eruption | B22 |
| Lichen planus | DR1 DR2 DRw9 DR10 Bw15 B8 |
| Psoriasis | Cw6 DR406 |
| Psoriatic arthritis | B27 |
| Ankylosing spondylitis | B27 |
| Reactive arthritis | B27 |
| Acute anterior uveitis | B27 |
| Behçet's disease | B51 |
| Dermatitis herpetiformis | DQw2 DR3 B8 |
| Pemphigus vulgaris | DR4 DRw6 Dw10 |
| Herpes gestationis | DR3 DR4 |
| Epidermolysis bullosa acquisita | DR2 |
| Subacute cutaneous lupus erythematosus | DR3 |
| Dermatomyositis | DQA1 DR3 B8 DRw52 |
| Alopecia areata | DR5 |
| Sjögren's syndrome | DR3 DQ2 |
| Herpes simplex virus-related erythema multiforme | B12 |
| Chronic idiopathic urticaria | DR4 DQ8 |
| Actinic prurigo | DR4 subtype DRB1*0407 |
| Systemic lupus erythematosus | DR3 DR2 |
| Generalized granuloma annulare | Bw35 |
| Lichen sclerosus | DQ7 |
| Early onset and severe psoriasis | B17 |