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infestation with lice (see louse). Lice live on the host's blood, obtained by piercing the skin and sucking the blood through the mouth part. The area bitten itches and may become sore and infected from scratching. Not only are lice an annoyance, but they also transmit some diseases, such as typhus.
Treatment. Head lice hatch eggs in silvery oval-shaped envelopes that attach to the shafts of the hairs. The eggs, called nits, can be removed with some difficulty by combing with a very fine-toothed comb. The lice and nits are effectively killed by applications of 1 per cent gamma benzene hexachloride (Kwell) in a cream or shampoo, lindane, permethrin cream or rinse, or pyrethrins and piperonyl butoxide liquid, gel, or shampoo.
pediculosis pu´bis infestation with lice of the species Phthirus pubis, the crab louse, usually limited to the pubic hairs but sometimes involving other hairy areas such as the eyelashes, eyebrows, or axillae. It is usually transmitted sexually but may be contracted from bedding and clothing. On the body, it can be treated with a special cream, lotion, or shampoo, such as Kwell, twice daily for two weeks. If the eyelashes are involved, a thick layer of petrolatum should be applied. Called also crabs and phthiriasis.


(informal) popular name for Pthirus pubis.
A popular slang term for Pediculosis humanis cruris; pubic lice


Pubic lice, see there.


An informal or slang term for pubic lice.
Mentioned in: Lice Infestation
References in classic literature ?
When the old man came to take away the plate which had contained the Crab's dinner, he found it full of gold, and as the same thing happened every day he soon became very fond of the Crab.
One day the Crab said to the fisherman's wife, 'Go to the King and tell him I wish to marry his younger daughter.
The old woman went accordingly, and laid the matter before the King, who laughed a little at the notion of his daughter marrying a crab, but did not decline the proposal altogether, because he was a prudent monarch, and knew that the Crab was likely to be a prince in disguise.
Go, old woman, and tell the Crab I will give him my daughter if by to-morrow morning he can build a wall in front of my castle much higher than my tower, upon which all the flowers of the world must grow and bloom.
Then the Crab gave her a golden rod, and said, 'Go and strike with this rod three times upon the ground on the place which the King showed you, and to-morrow morning the wall will be there.
When he drew near they found a soft-shell crab clinging fast to the stiff hair of the zebra's head, where it held on by one claw.
Crab," said the zebra, "here are the people I told you about; and they know more than you do, who lives in a pool, and more than I do, who lives in a forest.
There is more of the world than Oz," declared the crab, in a stubborn voice.
So you see," continued the zebra, addressing the crab, "here are people of real consequence, who know what they are talking about.
Then they know there's more water in the world than there is land," asserted the crab, in a shrill, petulant voice.
And if these miss the ball, and it rolls dangerously in front of our goal, Crab Jones and his men have seized it and sent it away towards the sides with the unerring drop-kick.
Crab Jones catches it for a moment; but before he can kick, the rush is upon him and passes over him; and he picks himself up behind them with his straw in his mouth, a little dirtier, but as cool as ever.