Tetter \Tet"ter\, n. [OE. teter, AS. teter, tetr; akin to G. zitter, zittermal, OHG. zittaroch, Skr. dadru, dadruka, a sort of skin disease. [root]63, 240.]

(Med.) A vesicular disease of the skin; herpes. See Herpes.

Honeycomb tetter (Med.), favus.

Moist tetter (Med.), eczema.

Scaly tetter (Med.), psoriasis.

Tetter berry (Bot.), the white bryony.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Tetter \Tet"ter\, v. t. [imp. & p. p. Tettered; p. pr. & vb. n. Tettering.]

To affect with tetter. --Shak.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Eczema \Ec"ze*ma\, n. [NL., fr. Gr. 'e`kzema; "ek out + zei^n to boil.]

(Med.) An inflammatory disease of the skin, characterized by the presence of redness and itching, an eruption of small vesicles, and the discharge of a watery exudation, which often dries up, leaving the skin covered with crusts; -- called also tetter, milk crust, and salt rheum.

Source: Webster's Revised Unabridged Dictionary (1913)