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Jeffrey Arnett's concept of emerging adulthood offers a framework to understand the unique developmental stage between adolescence and full-fledged adulthood, generally from ages 18 to 25. This period is marked by extensive exploration and shifts in identity, relationships, and career choices, a process known in psychology as role experimentation. Emerging adulthood reflects the evolving cultural expectations surrounding adulthood and the dynamic process of personal transformation during...
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Updated: Feb 3, 2026

DNA Staining Method Based on Formazan Precipitation Induced by Blue Light Exposure
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Methaemoglobinaemia: A Blue Light Emergency.

S Uí Bhroin1, R McNamara1, E Kidney1

  • 1St. James’s Hospital, Dublin.

Irish Medical Journal
|October 31, 2018
PubMed
Summary

Severe methaemoglobinaemia occurred due to amyl nitrite, or "poppers." The patient improved with treatment, confirming the diagnosis of this dangerous condition.

Area of Science:

  • Toxicology
  • Clinical Medicine

Background:

  • Amyl nitrite, commonly known as "poppers," is a recreational drug.
  • Inhalant nitrite abuse can lead to serious medical conditions.

Observation:

  • A patient presented with reduced consciousness and cyanosis.
  • Symptoms suggested severe methaemoglobinaemia.

Findings:

  • The patient's condition improved significantly with treatment.
  • Diagnosis of methaemoglobinaemia secondary to amyl nitrite use was confirmed post-treatment.

Implications:

  • This case highlights the potential for severe toxicity from recreational amyl nitrite use.
  • Prompt recognition and treatment are crucial for managing methaemoglobinaemia.

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