1) Invisibility 2) Seclusion 
• (n.) The sudden disappearance of inflammation. • (n.) Concealment; seclusion; retirement.
Del`i·tes'cence noun [ See Delitescent .] 1. Concealment; seclusion; retirement. « The delitescence of mental activities.» Sir W. Hamilton. 2. (Medicine) The sudden disappearance of inflammation. 
Type: Term Pronunciation: del′i-tes′ens Definitions: 1. Rarely used term for (1) sudden subsidence of symptoms; disappearance of a tumor or a cutaneous lesion; (2) period of incubation of an infectious disease.
Delitescence is the sudden disappearance of a lesion or of the signs and symptoms of a disease.