-plexia, -plexias, -plexies, -plexy, -plectic, -plexic

(Greek: stroke, wound; used in medicine to denote "a condition resulting from a stroke")

apoplectic (adjective), more apoplectic, most apoplectic
1. Pertaining to or suffering from a stroke or a sudden loss of physical control or consciousness: Joe's mother had an apoplectic attack which was caused when a blood vessel in her brain ruptured or became blocked.
2. Conveying extreme anger: When anyone is very upset or greatly disturbed, he or she or she is considered as someone who is having an apoplectic reaction to something that really bothering him or her.
3. Etymology: from Latin apoplecticus and Greek apoplektikos; from apoplessein, "to be disabled with a stroke".
apoplexy (s) (noun), apoplexies (pl)
1. A term for a "stroke", a cerebrovascular accident (CVA), often associated with loss of consciousness and paralysis of various parts of the body.
2. Sudden impairment of neurological function; especially, something resulting from a cerebral hemorrhage.
3. Any acute clinical event, related to impairment of cerebral circulation, which lasts longer then twenty-four hours; brain attack.
4. A sudden effusion of blood into an organ or tissue.
5. A fit of extreme anger; rage.
6. Etymology: apoplexy comes from the Greek apoplexia, "a seizure", in the sense of being "struck down".

In Greek, plexe is "a stroke". The ancients believed that anyone suffering a stroke; or any sudden incapacity, had been struck down by the gods.

Also, from from Old French apoplexie, "a sudden fit of paralysis and dizziness"; or directly from Late Latin apoplexia; from apo-, "off" + plessein, "to hit".

cataplexy (s) (noun), cataplexies (pl)
1. A debilitating medical condition in which a person suddenly feels weak and collapses at moments of strong emotion; such as, laughter, anger, fear, or surprise: When such collapsing results, people with cataplexy may seriously injure themselves.

Sometimes, laughter and other emotions trigger a reflex of cataplexy in people which can bring many of the muscles of the body to the point of collapse.

The phenomenon of cataplexy can be measured by sending electric signals through the muscles and gauging their responses. In cataplexy, what is known as the H-reflex, a neurological pathway that causes muscle contractions, virtually disappears.

Cataplexy often happens to people who have narcolepsy, a disorder in which there is great difficulty stayin awake during the daytime.

2. Etymology: from Greek kata, "down" + plexis,"a stroke, a seizure," or "a falling-down seizure".
electroplexy (s) (noun), electroplexies (pl)
The immediate effects produced by the passage of an electric current through any part of the body: An electroplexy can cause a painful stimulation of nerves or contractions of the muscles.
neuroplexia (s) (noun), neuroplexias (pl)
A network of nerve cells or fibers.
neuroplexus (s) (noun); neuroplexus, neuroplexses (pl)
An interlacing network of nerve cells, fibers, blood vessels, or lymphatic vessels.
pagoplexia (s) (noun), pagoplexias (pl)
Frostbite; damage to tissues as the result of exposure to very low environmental temperatures.
phrenoplexia (s) (noun), phrenoplexias (pl)
A clinical syndrome known in the early part of the 19th century as ecstasy (a trance state in which ideas of dedication and complete surrender occupy almost the entire field of consciousness).
pseudoapoplexy (s) (noun), pseudoapoplexies (pl)
A condition resembling apoplexy, but without cerebral hemorrhage.
selenoplexia (s) (noun), selenoplexias (pl)
A stroke resulting from an acute inhalation exposure to selenium; usually in the form of selenium dioxide or hydrogen selenide: Selenoplexia primarily results in respiratory effects with irritation of the mucous membranes in the nose and throat, producing coughing, nosebleeds, dyspnea (difficulty breathing), bronchial spasms, bronchitis, and chemical pneumonia.

Selenoplexia may also result in gastrointestinal effects including vomiting and nausea; cardiovascular effects; and neurological problems; such as, headaches and malaise; and irritation of the eyes.