| because of its chronic recurrent nature | 6 | cause |
| often | 5 | degree |
| in the foot | 3 | location |
| psoriasis → be → difficult | 17 |
| psoriasis → be → challenge | 5 |
| psoriasis → be → difficult condition | 5 |
| negative | neutral | positive |
| 0.637 | 0.315 | 0.048 |
| Raw frequency | 27 |
| Normalized frequency | 0.454 |
| Modifier score | 0.600 |
| Perplexity | 49.260 |