crisis [kri´sis] (pl. cri´ses) (L.)
1. the turning point of a disease for better or worse; especially a sudden change, usually for the better, in the course of an acute disease.
2. a sudden paroxysmal intensification of symptoms in the course of a disease.
) the symptoms accompanying an acute onset or worsening of addison's disease
: anorexia, vomiting, abdominal pain, apathy, confusion, extreme weakness, and hypotension; if untreated these progress to shock and then death.
catathymic crisis an isolated, nonrepetitive act of violence that develops as a result of intolerable tension.
an attack of severe watery diarrhea and vomiting producing dehydration and acidosis, sometimes occurring in infants with celiac disease
an uncommon sickle cell crisis
in which there is acute red blood cell destruction with jaundice.
identity crisis a period in the psychosocial development of an individual, usually occurring during adolescence, manifested by a loss of the sense of the sameness and historical continuity of one's self, confusion over values, or an inability to accept the role the individual perceives as being expected by society.
life crisis a period of disorganization that occurs when a person meets an obstacle to an important life goal, such as the sudden death of a family member, a difficult family conflict, an incident of domestic violence (spouse or child abuse), a serious accident, loss of a limb, loss of a job, or rape or attempted rape.
a life crisis
in which usual coping mechanisms are inadequate in dealing with a stress common to a particular stage in the life cycle or with stress caused by a transition from one stage to another. Called also developmental crisis
the sudden development of dyspnea
requiring respiratory support in myasthenia gravis
; the crisis is usually transient, lasting several days, and accompanied by fever.
oculogyric crisis a symptom of an acute dystonic reaction in which the person demonstrates a fixed gaze, usually upward; also, the uncontrollable rolling upwards of the eye. It can be a result of encephalitis or a reaction to antipsychotic medications.
a sickle cell crisis
in which there is severe pain due to infarctions in the bones, joints, lungs, liver, spleen, kidney, eye, or central nervous system.
Any severe elevation in blood pressure (usually a diastolic pressure greater than 130 mm Hg) with or without damage to internal organs or other structures, e.g., brain, heart, aorta, kidneys. In hypertensive emergencies
, end organs are damaged, and antihypertensive drugs usually are given intravenously to try to lower the blood pressure within an hour. Agents used in hypertensive emergencies include sodium nitroprusside, nitroglycerin, labetalol, and enalaprilat.
In hypertensive urgencies, the blood pressure is extremely elevated, but there is no sign or immediate threat of organ damage. Typically, oral beta blockers, ACE inhibitors, or clonidine, alone or in combination, are given to lower pressures over 1 or 2 days.