Correlation Between Objective Skin Pigment Measurement and Fitzpatrick Skin Type

Study Overview
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Brief Summary
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The purpose of this study is to correlate subjective skin pigment measurements as reported by patient-responses to the Fitzpatrick Skin Type Scale versus objective classification of skin pigment utilizing Individual Typology Angle (ITA) measurements.

Detailed Description
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The Fitzpatrick scale is a numerical classification for human skin color developed in 1975 as a way to estimate the response of different types of skin to UV light. It is used by dermatologists to classify skin tone and assess the risk of skin cancer. The Fitzpatrick scale encompasses six gradings, from I to VI. However, this does not include all skin tones, as there are significantly more not encompassed within the scale. The aim of this study is to incorporate objective measurements when identifying a patient's Fitzpatrick skin type.

Official Title
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Correlation Between Objective Skin Pigment Measurement and Fitzpatrick Skin Type

Conditions
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Skin Pigment

Intervention / Treatment
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* Other: Survey administration for Fitzpatrick skin type
* Device: Measurement of ITA based on SkinColorCatch instrument


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male and females that are 18 years of age and older Subjects with all Fitzpatrick skin types I-VI One-third of subjects will be Fitzpatrick I or II skin types, one-third of subjects will be III or IV, and one-third will have V and VI. Exclusion Criteria: Individuals who are pregnant or breastfeeding. Prisoners Adults unable to consent Individuals with open wounds on the nondominant upper inner arm Individuals with fibrotic skin disease or other skin conditions or hair growth on the nondominant upper inner arm that could affect skin measurements in the opinion of the investigator Individuals with tattoos that cover the site on the nondominant upper inner arm Individuals with post-inflammatory hypopigmentation or hyperpigmentation Individuals with vitiligo Individuals who have used self-tanning products or tanning beds in the last two weeks.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| General public<br>This survey and ITA measurements will be performed among the general public | Other: Survey administration for Fitzpatrick skin type<br>* Survey administration for Fitzpatrick skin type<br>Device: Measurement of ITA based on SkinColorCatch instrument<br>* Measurement of ITA based on SkinColorCatch instrument<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Skin colorimeter derived Individual Typology Angle value correlated against self-reported Fitzpatrick skin type | Correlation of ITA by the use of SkinColorCatch (Delfin) compared to the Fitzpatrick skin scale as determined by the patients' responses to validated questionnaire. The higher the ITA, the lighter the skin. ITA skin color types are classified into six groups, from Very Light to Dark skin. | One time - collected for up to 1 year for the entire study | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Assess Fitzpatrick Skin type based on validated questionnaire | Questionnaire about sun sensitivity and tanning will be administered to calculate the Fitzpatrick skin types | One time - collected for up to 1 year for the entire study | 
| Sun protection habit use | Quantification of sun protection habits based on survey question asking their typical use of sun protection | One time - collected for up to 1 year for the entire study |