Today's Word, "urtext" reminded me of urticaria, and I realized I didn't know its etymolgy. From AHD:

urticaria

SYLLABICATION: ur·ti·car·i·a
PRONUNCIATION: ûrt-kâr-
NOUN: See hives.
ETYMOLOGY: New Latin urticria, from Latin urtica, nettle.
OTHER FORMS: urti·cari·al —ADJECTIVE

So where did "hives" come from? Alas, AHD doesn't help:
hives

PRONUNCIATION: hvz
PLURAL NOUN: (used with a sing. or pl. verb) A skin condition characterized by intensely itching welts and caused by an allergic reaction to internal or external agents, an infection, or a nervous condition. Also called nettle rash, urticaria.
ETYMOLOGY: Origin unknown.

As a feeble jest, if you knock over a bee-hive, you can
get a stinging rash.

And the etymology of bee-hive from AHD is disappointing:

hive

PRONUNCIATION: hv
NOUN: 1a. A structure for housing bees, especially honeybees. b. A colony of bees living in such a structure. 2. A place swarming with activity.
VERB: Inflected forms: hived, hiv·ing, hives

TRANSITIVE VERB: 1. To collect into a hive. 2. To store (honey) in a hive. 3. To store up; accumulate.
INTRANSITIVE VERB: 1. To enter and occupy a beehive. 2. To live with many others in close association.
PHRASAL VERB: hive off To set apart from a group: hived off the department into another division.
ETYMOLOGY: Middle English, from Old English hf.