There are multiple definitions:

1. skin-associated lymphoid tissue(English)

   • MALT
   • Lymphatic system/lymphoma, Dermatology

2. Severity of ALopecia Tool(English)

   • grading according to percentage of hair loss in any of the 4 areas is the percentage hair loss multiplied by percent surface area of the scalp in that area
   • AGA, FPHL, MPHL, AA, ADRC, AAD, FDA, HF, IFN, ISA, JAKi, MHC
   • Dermatology, Scoring systems/scales
   • https://doi.org…974-7753.111223
   • https://doi.org…det.2021.05.001
   • https://doi.org…eth.2022.10.005
   • https://doi.org…aad.2023.05.049