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Related Concept Videos

Precipitation Gravimetry01:03

Precipitation Gravimetry

Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
Drugs Acting on Autonomic Ganglia: Stimulants01:23

Drugs Acting on Autonomic Ganglia: Stimulants


Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating sympathetic or...
Local Anesthetics: Differential Sensitivity of Nerve Fibers01:24

Local Anesthetics: Differential Sensitivity of Nerve Fibers

Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
Drug Toxicity: Risk factors01:24

Drug Toxicity: Risk factors

Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
Drug toxicity: Idiosyncratic Reactions01:16

Drug toxicity: Idiosyncratic Reactions

Idiosyncratic drug reactions represent abnormal chemical responses that vary significantly among individuals, ranging from extreme sensitivity to low doses to insensitivity to high doses. These reactions often occur due to the drug's covalent binding with serum proteins, forming a foreign hapten that triggers an immunotoxicological response. The variability in drug reactions has a strong pharmacogenetic foundation, with genetic differences crucial in how individuals metabolize drugs. For...
Cardiac Catheterization IV: Nursing Management01:26

Cardiac Catheterization IV: Nursing Management

Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...

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Related Experiment Video

Updated: Jun 13, 2026

Rearing the Cabbage White Butterfly (Pieris rapae) in Controlled Conditions: A Case Study with Heavy Metal Tolerance
08:08

Rearing the Cabbage White Butterfly (Pieris rapae) in Controlled Conditions: A Case Study with Heavy Metal Tolerance

Published on: August 18, 2023

Nickel sensitivity in women.

T Enta

    Canadian Family Physician Medecin De Famille Canadien
    |May 15, 2010
    PubMed
    Summary

    Nickel dermatitis is common, especially in women due to frequent contact with nickel-containing items like jewelry. This summary covers diagnosis and treatment for this prevalent skin condition.

    Area of Science:

    • Dermatology
    • Toxicology
    • Materials Science

    Background:

    • Nickel is a prevalent metal in consumer products, leading to widespread exposure.
    • Nickel dermatitis, an allergic contact dermatitis, affects a significant portion of the population.
    • Women are disproportionately affected due to common use of nickel-containing accessories.

    Purpose of the Study:

    • To highlight the prevalence and clinical presentation of nickel dermatitis.
    • To discuss diagnostic methods for identifying nickel allergy.
    • To outline treatment strategies for nickel-induced skin reactions.

    Main Methods:

    • Review of clinical presentations of nickel dermatitis.
    • Discussion of diagnostic patch testing for nickel sensitivity.

    Related Experiment Videos

    Last Updated: Jun 13, 2026

    Rearing the Cabbage White Butterfly (Pieris rapae) in Controlled Conditions: A Case Study with Heavy Metal Tolerance
    08:08

    Rearing the Cabbage White Butterfly (Pieris rapae) in Controlled Conditions: A Case Study with Heavy Metal Tolerance

    Published on: August 18, 2023

  • Overview of therapeutic interventions and management.
  • Main Results:

    • Nickel dermatitis commonly manifests as eczema, particularly on earlobes from earrings.
    • Characteristic clinical signs aid in diagnosis.
    • Effective management involves allergen avoidance and symptomatic treatment.

    Conclusions:

    • Nickel dermatitis is a significant health concern, particularly for women.
    • Early diagnosis through clinical evaluation and patch testing is crucial.
    • Management focuses on allergen avoidance and appropriate dermatological treatment.