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Related Concept Videos

IR Frequency Region: Fingerprint Region01:03

IR Frequency Region: Fingerprint Region

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IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
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The first thing a clinician sees is the skin, so the examination of the skin should be part of any thorough physical examination. Most skin disorders are relatively benign, but a few, including melanomas, can be fatal if untreated. A couple of the more noticeable disorders, albinism and vitiligo, affect the appearance of the skin and its accessory organs.
Albinism
Albinism is a genetic disorder that affects (completely or partially) the coloring of skin, hair, and eyes. The defect is primarily...
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Physical and Chemical Properties of Matter02:57

Physical and Chemical Properties of Matter

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The characteristics that enable us to distinguish one substance from another are called properties.
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Difference from Background: Limit of Detection01:05

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The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
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Related Experiment Video

Updated: Feb 28, 2026

Virtual Hand with Ambiguous Movement between the Self and Other Origin: Sense of Ownership and 'Other-Produced' Agency
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Fingerprint Change: Not Visible, But Tangible.

Francesca V Negri1, Annamaria De Giorgi1, Cecilia Bozzetti1

  • 1Medical Oncology, University Hospital, Via Gramsci 14, 43126, Parma, Italy.

Journal of Forensic Sciences
|June 13, 2017
PubMed
Summary

Chemotherapy can alter fingerprints, causing issues with biometric identification, even without visible skin toxicity. Fingerprint function typically recovers within two months after treatment cessation.

Keywords:
capecitabinecolon cancerfingerprint lossforensic sciencehand-foot syndromeskin toxicity

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Area of Science:

  • Oncology
  • Dermatology
  • Biometrics

Background:

  • Hand-foot syndrome (HFS) is a chemotherapy-induced cutaneous toxicity.
  • HFS can alter fingerprints, leading to false rejections in biometric identification systems.
  • This poses a challenge for cancer patients relying on such technology.

Observation:

  • A colon cancer patient experienced fingerprint alterations after 6 months of adjuvant chemotherapy.
  • The patient could not use fingerprint recognition devices due to these changes.
  • No overt clinical signs of skin toxicity were observed.

Findings:

  • Digital processing improved fingerprint definition without altering the papillary design.
  • Quantitative and qualitative fingerprint alterations were documented post-chemotherapy.
  • Fingerprint function returned to normal two months after treatment completion.

Implications:

  • This case highlights chemotherapy-induced fingerprint alterations without clinical HFS signs.
  • It underscores the need for alternative fingerprint identification methods.
  • Improved biometric systems are necessary to manage unexpected identification issues in patients.