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1. A fissure.
Farlex Partner Medical Dictionary © Farlex 2012


Substance abuse A 'free-base' form of cocaine which, when smoked in a pipe, produce a brief, very intense 'high'. See Bingeing, Cocaine, Crack 'smile. ', Free base cocaine.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


1. A fissure.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


A highly purified form of COCAINE which produces an intense reaction of rapid onset. Crack is inherently more dangerous than less concentrated forms and deaths have resulted from its use.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005


A fissure.
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about crack

Q. what causes the sound of cracking noises in the head all the time it was said i had acute sinusitis but honestly i think it is more . I don't know why i have cracking noises in my head . I am very concerned about this also my neck is always stiff feeling and aching all the time. . My eyes are very tired and i see blue spots and they hurt behind the eye very badly . I have headaches very often

A. wow...that really sounds serious...i have chronic sinusitis and i can tell you i had horrible headaches but nothing like you describe now. i would strongly consider going to a hospital and checking it out...
tell us what was the result!

Q. anyone knows how to stop hard skin on the feet from becoming cracked??? during summer my feet got lots of hard skin and in the heel area the skin actually got cracked kinda deep. it hurts now and the cracks are starting to get infected I guess... do u guys know how to solve this?? I know there are some creams for that but I thought maybe now it's too late for that and I need something stronger?

A. There are good creams for moisterizing the skin of your feet on a daily basis, however now that you feel they might be infected you should see a dermatologist for some better treatment.

Q. Im only 17 I have horrble lower back pains. Im constitly rubbing,stretching, or cracking my back. the pain is either a throbbing pain or an ache or sting.I feel it worse when I put my chest out my shoulders back. my back feels like its out of place.

A. Lower back pain is so very common... I have had it for years, and just recently what I found to be very helpful is walking. Even a 30-45 minute walk and then some streching is good. I have hardly had any pain since I started exercising and it feels really good. Swimming is also known to help.

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References in periodicals archive ?
Then to get a little perspective on things, the wish he were Putin, free to crack the whip headline in the Palm Beach Post on Thursday was "Will Trump's return snarl traffic?" El Presidente is likely to spend Thanksgiving at Mar-a-Lago his Palm Beach Club which he calls "the Winter White House".
Senator Vicente Tito Sotto III on Monday said the Nationalist People's Coalition (NPC) would crack the whip so that the country's second largest political party would support one candidate in 2016.
The Premiership are ready to crack the whip at Bolton as fears mount that stadium videos could turn fans nasty.
He threatened to "crack the whip" on lazy and underperforming workers saying it will no longer be "business as usual."
RAY WILKINS has vowed to make Aston Villa's annual relegation battle a thing of the past - and crack the whip to turn them into a top-10 outfit.
Uhuru has only three years to crack the whip against those derailing his development agenda before his two-term presidency ends.
IRISH actor Michael Fassbender has told how he had to learn to "crack the whip" in his new movie 12 Years A Slave.
President Uhuru Kenyatta's failure to crack the whip on graft suspects has triggered fury and critics say he has been beaten into submission by his relentless deputy William Ruto.
Mr Hammond should crack the whip instead of risking another private sector disaster.