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In East African sleeping sickness, CNS signs appear early, presenting in weeks to a month with the two stages merging, whereas West African sleeping sickness has a more gradual onset with CNS symptoms taking months to a year.
A number of tests can be carried out to assess your sleep and help identify any underlying cause. These are usually carried out at a specialist sleep centre. Two of the main tests used are: Polysomnography (a night time sleep test), which will help rule out sleep disorders such as narcolepsy or sleep apnoea.