There has been an extremely important UK clinical development in the recognition and treatment of HPPD and other psychoactive substance related harm.
Last week I was asked to speak to ministers from the home office about HPPD to provide an account of the reality of psychoactive substance acquisition, use and danger (i.e HPPD). My experience was called upon to provide the ministers some insight and inform the writing of legislation regarding novel psychoactive substances (this bill: https://www.gov.uk/government/collections/psychoactive-substances-bill-2015).
It was also used as an opportunity to introduce the ministers to the work that is being headed by the Club Drug Clinic in London, which is somewhere I was treated. Frankly, their treatment and work in public health is exceptional. I highly recommend seeking their help if you want clinical support in the UK. If you have little hope for clinical help, or doubt that HPPD will ever be clinically recognised, you will be relieved to know that times are changing.
The huge leap forward is called NEPTUNE (Novel Psychoactive Treatment UK Network). NEPTUNE has been developed to disseminate clinical information regarding psychoactive substance harm. HPPD is included in detail in the following document (12.13.2). Take a look through it: I hope you will be nothing short of impressed.
See: http://neptune-clinical-guidance.co.uk/wp-content/uploads/2015/03/NEPTUNE-Guidance-March-2015.pdf
These clinical guidelines are being distributed to hospitals, GP's and other appropriate services: a real leap of progress from when I started at the clinic 1-2 years ago and little was known about the harm caused by psychedelics, particularly 'novel psychoactive substances' a.k.a "research chemicals". If you are struggling with obtaining medical help in the UK, referring your GP/clinician to this document may be of great use to you.