I love all of this scientific research that is bringing to light information about artists and their illnesses. According to Sarah Knapton article in The Telegraph … scientists used a technique called ‘fractal analysis’ to study how their painting style changed as their illness progressed. The process looks for tell-tale repeats of patterns in an artist’s work. Usually over time, the number of familiar patterns and brushstrokes, increase.
Source: Paintings can show if artist was suffering from Alzheimer’s or Parkinson’s