Bruises tend to show multiple colors as they age. The Colorful Stages of Bruises: Colourimeters - Tristimulus and spectrophotometric methods of assessing the colour of bruises Colourimetry has been utilised by several researchers in order to evaluate bruises. Hempling described the utility of photographing the skin under UV lighting, in order to demonstrate bruises that were no longer discernable to the naked eye. Learn more about them.
Bruises can take minutes to days to develop Atwal et al pp.
Tell-Tale Color Changes: Camera Can Find Age of a Bruise
Red and purple tend to be fresh. Keep in mind that the change from one color to the next is very gradual, and there are varying shades of these colors along the way. Red could appear any time up to 1 week, whilst blue, brown, grey and purple could appear between 1 and 14 days. The appearance of a bruise depends on three factors: This technique was therefore said to be of particular use where the bruise had distinctive or 'clear cut' margins. View photos of basal cell carcinoma, squamous cell carcinoma, melanoma, and Kaposi sarcoma.