Mydriasis: Causes & Reasons

Possible Causes for Mydriasis

Physical examination revealed a significant malaise, mydriasis and peripheral coldness. [omicsonline.org]

During the acute phase, diaphoresis, hypertension, tachycardia, mydriasis, agitation, and even psychosis can be present. [cancertherapyadvisor.com]

The sixth patient had characteristic serial attacks of seizures, hyperthermia, tachycardia and mydriasis. [omicsonline.org]

Acute Angle Closure Glaucoma

Examination revealed reactive mydriasis, and upper lid retraction on the right side. [ncbi.nlm.nih.gov]

The bilateral mydriasis was diagnosed as an unusual clinical presentation of simultaneous bilateral AAC glaucoma. [ncbi.nlm.nih.gov]

CONCLUSION: Cocaine causes mydriasis and can induce angle closure in predisposed individuals. [ncbi.nlm.nih.gov]

Anticholinergic Toxicity

Tachycardia, hyperthermia, mydriasis and urinary retention are effects caused by inhibition of peripheral receptors, whereas hallucinations, seizure, and even coma might be [symptoma.com]

Anticholinergic mydriasis, also known as pharmacologic blockade and “atropinic” mydriasis, refers to the absolute or partial paralysis of pupillary constriction unilaterally [eyewiki.aao.org]

Mydriasis can also occur from isolated local contact of Jimsonweed with the eye (cornpicker's pupil). [emjournal.net]

Botulism

Fixed dilated pupils (Mydriasis) Over excitation of radial fibers of the iris which increases the pupillary aperture is referred to as a mydriasis or blown pupil. [medicaljoyworks.com]

Over the next days she became increasingly weak, developed bilateral ptosis, the muscle stretch reflexes were lost, and mydriasis with slow pupillary responses was noted. [ncbi.nlm.nih.gov]

An 11-year-old boy presented with bilateral ptosis and mydriasis, dry mouth, difficulty in swallowing, dysphonia, urine retention and constipation. [ncbi.nlm.nih.gov]

Glaucoma

In older cases the pupil will dilate and this is called mydriasis. [doi.org]

Angle closure, with palpable hardness of the eye, mydriasis, and anterior prominence of the lens, was described in greater detail in the 18th and 19th centuries. [ncbi.nlm.nih.gov]

2-selective adrenergic agonists (topical) Apraclonidine 1 drop two to three times a day Decrease aqueous production; may increase uveoscleral aqueous outflow; may cause mydriasis [msdmanuals.com]

Alcohol Withdrawal Delirium

[…] generalised tonic-clonic seizures Stage IV – after 48 hrs global confusional state autonomic hyperactivity tremors hallucinations seizures hyperadrenergic: diaphoresis, flushing, mydriasis [lifeinthefastlane.com]

Clinical findings associated with DTs may include the following: Tachycardia Hyperthermia Hypertension Tachypnea Diaphoresis Tremor Mydriasis Altered mental status Severe [emedicine.medscape.com]

Mydriasis. Ataxia. Altered mental status. Cardiovascular collapse. Risk factors[6] Previous history of delirium tremens. Previous history of alcohol withdrawal seizures. [patient.info]

Organophosphate Poisoning

Tachycardia and mydriasis must not be used to limit or to stop subsequent doses of atropine. [openanesthesia.org]

Miosis is replaced by mydriasis. [derangedphysiology.com]

Second, excessive ACh at nicotinic acetylcholine receptors in preganglionic sympathetic synapses and at motor end plates may cause mydriasis, tachycardia, weakness, hypertension [emedicine.com]

Head Trauma

[…] man was in a motor vehicle accident and received a head injury that resulted in intracranial bleeding at multiple sites, fractures of facial bones, and immediate traumatic mydriasis [nejm.org]

Coma

Mydriasis is also common. This indicator can be used to include patients in one of two groups: V1: Autonomic responses to painful stimuli are present. [doi.org]

Septo-Optic Dysplasia

Pupils that dilate, or widen, abnormally in response to light (mydriasis). [my.clevelandclinic.org]

Accidental Hypothermia

Patients also may have mydriasis, and it should be noted that mild hypothermia usually does not depress pupillary light reflexes. Respiratory. [ahcmedia.com]

Substance Abuse

Abstract The Substance Abuse Bureau of the Ontario Ministry of Health recently launched the Ontario Addictions Treatment Services Rationalization Project to increase the capacity of existing services and restructure the service delivery system. One of the recommended strategies was to shorten the length of[…] [ncbi.nlm.nih.gov]

Stroke

OBJECTIVE: ed to investigate the association between blood pressure and acute phase stroke lethality in a Brazilian intensive care unit. METHODS: This was an observational, prospective cohort study of hemorrhagic and ischemic stroke intensive care patients. The primary outcome was all-cause mortality during the[…] [ncbi.nlm.nih.gov]

Hernia

General information Client Total Denmark Project Tyra Redevelopment Year 2020-22 Location North Sea (Denmark) Vessels Pioneering Spirit, Fortitude, Oceanic Max. water depth 42 m (140 ft) Scope of work Engineering, preparation, removal, transport and disposal of: 14,000 t TEA and 7,800 t TWA topsides (2020) 1,200 t[…] [allseas.com]

Primary Progressive Multiple Sclerosis

We present three patients with a clinical course and cerebrospinal fluid findings consistent with a diagnosis of primary progressive multiple sclerosis (PPMS). Extensive and repeated magnetic resonance imaging (MRI) examinations showed only diffuse abnormality in brain and spinal cord, but no focal lesions. We propose[…] [ncbi.nlm.nih.gov]

Epilepsy

Seizures, abnormal movements or behavior due to unusual electrical activity in the brain, are a symptom of epilepsy. But not all people who appear to have seizures have epilepsy, a group of related disorders characterized by a tendency for recurrent seizures. Non-epileptic seizures (called pseudoseizures) are not[…] [webmd.com]

Hypoxia

Int J Oncol. 2018 Jul;53(1):215-224. doi: 10.3892/ijo.2018.4376. Epub 2018 Apr 24. Author information 1 Department of Urology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China. 2 Chongqing Key Laboratory of Molecular Oncology and Epigenetics, The First Affiliated Hospital of[…] [ncbi.nlm.nih.gov]

Middle Ear Cholesteatoma

[…] case of mydriasis related to Datura inoxia. [emj.bmj.com]

Mydriasis can affect one pupil at a time or both at once. Mydriasis that affects only one eye is called anisocoria. [medicalnewstoday.com]

Gardener’s mydriasis. Lancet1992;339:752. ↵ Reader AL. Mydriasis from Datura wrightii. Am J ophthalmol1977;84:263–4. ↵ Thompson HS, Newsome DA, Lowenfeld IE. [emj.bmj.com]

Sudden Cardiac Death

By Robert S. McKelvie, MD, PhD, Professor of Medicine, Western University; Secondary Prevention and Heart Failure Programs, St. Joseph's Health Care Click here for Patient Education Sports and the Heart Athlete’s Heart Sudden Cardiac Death in Athletes An estimated 1 to 3/100,000 apparently healthy young athletes[…] [msdmanuals.com]

Cardiac Arrest

Cardiac arrest is a medical term that refers to the mechanical cessation of the heart resulting to the absence of circulating blood in the system. The cessation of blood flow to the vital organs of the body results in death if left untreated. Sudden cardiac arrest refers to the abrupt cessation of cardiac[…] [symptoma.com]

Ventricular Fibrillation

Ventricular Fibrillation (VF or V-fib) {{{locatieafbeelding}}} Atrial rate 60-100 bpm Ventricular rate 400-600 bpm Regularity irregular Origin ventricles P-wave AV-dissociation Effect of adenosine none Example ECG: {{{example}}} Example ECG2: {{{example2}}} Ventricular fibrillation (VF or V-fib) is chaotic[…] [en.ecgpedia.org]

Multiple Sclerosis

Dr. Carla Rossotti (left), a general practitioner, and her health care team leave the home of the their patient, 37-year-old Osvaldo Daniel Martinez. He has the symptoms of a degenerative disease, Rossotti says, but he needs a neurologist's evaluation before he can get proper treatment. Sarah Varney/Kaiser Health[…] [npr.org]

Brain Death

Recent Examples on the Web In both cases, the boys were deprived of oxygen to the extent that Children’s Hospital of Philadelphia reached a grim diagnosis: brain death. — Tom Avril, Philly.com, "At CHOP, two boys were diagnosed with brain death. Here's what that means," 24 May 2018 Jahi McMath, the Oakland, Calif.,[…] [merriam-webster.com]

Hyoscyamus Niger Poisoning

Causes of a mydriasis, more evident in light, are trauma, third nerve palsy, Adie's pupil and pharmacologic mydriasis [ 1 ]. [ijponline.biomedcentral.com]

Cocaine addict Loses interest in family, friends, food, sexual activity Emaciated & physically exhausted Mydriasis, anorexia, hyperactivity, tachycardia, tachypnoea, insomnia [slideshare.net]

Symptoms like mydriasis, tachycardia, arrhythmia, agitation, convulsion and coma can appear. Diagnosis is made by clinical symptomatology and history. [ncbi.nlm.nih.gov]

Hypovolemic Shock

[…] close Please confirm that you would like to log out of Medscape. If you log out, you will be required to enter your username and password the next time you visit. Log out Cancel Updated: Oct 13, 2016 Author: Paul Kolecki, MD, FACEP; Chief Editor: Barry E Brenner, MD, PhD, FACEP more... Overview Background[…] [emedicine.medscape.com]

Spleen Disease

[…] case of mydriasis related to Datura inoxia. [emj.bmj.com]

Mydriasis can happen for many different reasons. [healthline.com]

Gardener’s mydriasis. Lancet1992;339:752. ↵ Reader AL. Mydriasis from Datura wrightii. Am J ophthalmol1977;84:263–4. ↵ Thompson HS, Newsome DA, Lowenfeld IE. [emj.bmj.com]

Oculomotor Nerve Paralysis

The affected individual will also have a ptosis, or drooping of the eyelid, and mydriasis (pupil dilation). [en.wikipedia.org]

[…] palpebrae superioris Downward and lateral rotation of eye- due to paralysis of all extra ocular muscle except lateral rectus and superior oblique muscle Dilatation of pupil (Mydriasis [physiologyexam.com]

To the Editor: Baker and Cannon (Nov. 3 issue) 1 describe a patient with left-sided ptosis and mydriasis after cranial trauma. [nejm.org]

Barbiturate Overdose

Tragically, there have been many famous people who died of barbiturate overdose. Celebrities who overdosed on barbiturates include Marilyn Monroe, Judy Garland, and Aimee Semple McPherson. What are barbiturates, and what is barbiturate overdose? Barbiturates are depressant drugs that have strong sedative[…] [ranker.com]

Multisystemic Smooth Muscle Dysfunction Syndrome

Important additional clinical features were extremely wide pupils not reacting to light admission (mydriasis), microcephaly and feeding difficulties with pathologic signs [thieme-connect.com]

Congenital mydriasis is an extremely rare pupil anomaly and is the feature for the early diagnosis of this new syndrome. [ncbi.nlm.nih.gov]

Initially described as a case report in 1999, it was characterized in 2010 as a syndrome of congenital mydriasis, patent ductus arteriosus, and aneurysmal arterial disease—in [en.wikipedia.org]

Insulinoma

Insulinomas are usually due to a solitary tumor, but they can be challenging to localize. A 66-year-old woman presented with a 1-year history of episodic neuroglycopenic hypoglycemia and was suspected of having an insulinoma. On a supervised fast, she was found to be hypoglycemic at 39 mg/dL, with an insulin of 40[…] [ncbi.nlm.nih.gov]