| Postulates | Definitions |
| 1. Concurrent onset | The dermatosis and malignancy occur concurrently |
| 2. Parallel course | If the malignancy is treated successfully or recurs, the dermatosis follows a similar course |
| 3. Uniformity | A specific malignancy is consistently associated with a specific dermatosis |
| 4. Statistical significance | There is a statistically significant association between the malignancy and the dermatosis based upon case-control studies |
| 5. Genetic basis | There is a genetic association between the malignancy and dermatosis |
