pustulate

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To cause to form pustules.
• intransitive verb To form pustules.
• adjective Covered with pustules.

from The Century Dictionary.

• To form pustules.
• In botany, same as pustular, 2.
• In entomology, covered with small spots, or with slight rounded elevations less distinct and regular than those of a granulated surface.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Covered with pustulelike prominences; pustular; pustulous
• transitive verb To form into pustules, or blisters.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To form, or be formed into pustules
• adjective Having pustules or prominences resembling them.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective (of complexion) blemished by imperfections of the skin