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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 ?
Set 10 years after the events of Crackdown 2, you continue to play as an agent working for The Agency CRACKDOWN 3 Xbox One, PC HHHHH in New Providence, a huge openworld city.
Crackdown 3 will launch this friday February 15 for the Xbox One at Rs 3,999.
The crackdown is part of the police efforts to curb the illegal practices and negative phenomena that affect peaceful atmosphere for residents and citizens in the emirate.
Though there will be challenges with the crackdown, we hope they will do it in a civilised manner.
Mr Mugambi warned boat operators against colluding with traffickers to ferry drugs into Lamu and other islands.The crackdown on drugs and drug peddlers continues.
"We look forward to sharing more on 'Crackdown 3' this Sunday during the Xbox E3 2018 briefing."
The group that played in the September 22 concert, Lebanese indie rock band Mashrou' Leila whose lead singer is openly gay, condemned the crackdown in a statement on its Facebook page.
In the first seven days of the crackdown, 49 men and women were arrested and 39 charged to appear at court, with the worst case recording a level three times the drink-drive limit.
The crackdown on drunken disorder on the streets, when bladdered youths would be marched to cash machines to pay fixed penalties?
Malacanang on Friday assured the government's assistance to undocumented Filipinos in Malaysia who would be affected by the crackdown on illegal foreign workers.
TEHRAN (FNA)- Bahraini security forces fired tear gas at houses during a crackdown on anti-regime protesters near the capital, Manama.
Ramadi / NINA / Anbar Operations Command launched on Monday 19, August an extensive security crackdown in Amiriya district south of Fallujah in search for wanted men.