I have lycan planus (skin rashes) on my body ..do you know what is the real cause ..any diet t avoid

If you have not seen a dr you should just to confirm that it is LP. I have oral L P. Which my dr said was brought on by stress. It is an autoimmune diease which is your bodies immune system attacking its self. On one of the other blogs for LP that I read someone with skin LP said that they were having great results taking coconut oil pills. They stated that the rough patches smoothed tramedisly as well as the redness and the itching. Their hair was also improving. 

I was told that this will never go away, but you might get it to go into remission good luck!

There are various vitamin companies on the Internet selling coconut oil pills. A less expensive solution is to purchase organic coconut oil and just eat two to three teaspoonfuls per day.  Some also do oil pulling with the coconut oil...which is letting it melt in your mouth and then forcing it through your teeth. You can even try the coconut oil on some test patches on your skin to see if it helps.  I put my lichen sclerosos in remission with the Paleo auto-immune diet...but it's not for everyone as it is extremely restrictive.  Sugar and gluten as well as nightshade vegetables would be the first foods to avoid to see if you have some improvement in your skin. Also taking a good multi-vitamin and a probiotic. Also...magnesium, calcium, D3 and K2 seem to have a positive effect...if you don't have success with the multi-vitamin and probiotic you may want to add them to your daily regimen. Some also find that their thyroid is low...so you may want to have that checked.

Welcome to the club! I have lichen planus of the nails for which there is no treatment available.  I also have lichen sclerosis.  Where the sclerosis is of the skin of the upper body, my dermatologist has told me that mometasone is the strongest ointment available.  Nothing else helps.  It may be that mometasone is appropriate for planus of the skin too.  You really need to see a dermatologist familiar with this skin condition.  Talking to doctors who aren't is a complete waste of time.  I have found that dietary changes make absolutely no difference whatsoever in my case.  Stress is the trigger and, as mentioned before, it is generally thought that the problem lies with the auto-immune system which is why sufferers often have, or develop, other auto-immune problems.  You will find this forum a lifeline as not many people (including the medical profession) know anything about the family of "lichen" conditions.