Drug related anxiety?

[Djpx313]

So I will start with the fact I have always been a closed off person with my real feelings. I had a fight with a very good friend who in anger told a lot of my friends embarrassing secrets. They never bought this upto me except a couple of times in passive aggressive comments when we were all heavily dosed in cocaine. I grew to except this and then at some point I started to believe colleagues and strangers knew my secrets too. Around this time I started to think I had flies or mites living in my hair and that again everyone knew and talked about it but no one mentioned it to me. I have had this feeling for two years now and for the first year believed it was down to hygiene as I had several rotten teeth and didn't live in the greatest of conditions. But for the last year I have lived with a close friend in a brand new house I shower daily and wash my hair every 3-4 days and have seen a dentist. I still constantly feel movement all over my hair sometimes my face and body as well. I also occasionally see small mite like flies that seem to come from my hair and this is in more than one location for example work/restaurant/home/other people's houses. My housemate is constantly itching when around me but I'm not sure if this is due to him believing I am infested in bugs. I habitually have smoked weed for the last ten years initially it helped with my sleep pattern and depression but I have recently started using cocaine 2-3 times a week and have been in a constant depressive state for the last 6-8 months I know this is due to the drug use but it feels more due to lack of confidence I am suffering from believing I am covered in bugs it has got to the point I will walk away half way through conversations as I think they are looking for bugs or have seen bugs. I have asked my family to check my hair and they have found nothing my barber is my cousin who is a really nice guy and hasn't mentioned anything. This leads me to believe from Internet research I have delusory parasotosis and that other people looking at my hairline and itching when round me is down to them seeing me act like I have bugs on me (at least I hope so) luckily I have been given the chance to move to a middle eastern dry country and am hoping that stopping drugs will sort this all out or is this part of a deeper mental issue that I should begin to get treated? Or worse case scenario do I have an infestation that I cannot get rid of with the normal shampoos / vinegar / tea tree remedies? All help and responses much appreciated!

[Paxiled]

I assume since you're seeing a dentist you also have a doctor, and if you had head lice I assume you would have mentioned it to him or her and would have been told whether it was true or not.  So we have to assume you don't actually have this problem.  Many of us are prone to certain mental problems, and drug use can bring them out.  And you've done a lot of drug use -- marijuana is a down drug and cocaine is an up drug, so you've been messing pretty regularly with a lot of your brain neurotransmitters and something came out.  For some of us, we stop using drugs when this happens, as it isn't fun anymore, and the problem goes away.  But sometimes we get so used to thinking a certain way that it becomes the way we think.  The fact it started with drugs doesn't matter now.  What matters is you need to see a psychologist and get diagnosed, and probably will be sent to a psychiatrist as well if these thoughts are illusions and are that deeply set in.  Get started sooner rather than later so you can move on.  

[Djpx313]

I have to say as well this has made debate suicide due to the lack of control and also the thought of constant betrayal by my best friends not pulling me aside and telling me although on a good day I look as that as a sign that it's not real. I feel like I have wasted the last two years of my life either ******* myself with drugs or sitting around being the butt of everyone's joke.

[AnxiousNoMore]

It doesn't seem like you will be getting over this bug fear on your own but you haven't seen any professionals so maybe they can help.
First step is go to a doctor to see if you have bugs, which it seems you don't have. Then see if you can believe his diagnosis, in which case it will be the end of your fears. If not, then you need some professional help like therapy or maybe a psychiatrist.