An itching or tingling sensation in your fingers is a precursor to the urge you have to pull out the hair from your own head or other parts of your body. You use your fingertips to seek out the perfect hair, rubbing it between your fingers and sometimes smelling it or chewing on it before pulling it out. Whilst it may seem that you are the only person afflicted with this strange disorder, globally there are thousands of people suffering from Trichotillomania, also known as Hair Pulling Disorder.
There are five criteria for a person to be diagnosed with Trichotillomania, as set out in the Diagnostic and Statistic Manual (DSM5)
1. Repetitive pulling resulting in noticeable hair loss.
2. Tension prior to pulling or when trying to resist the urge to pull.