Certainly is worth another opinion - do put 'lichen sclerosis' into the Forum search box: make notes ;-) This condition requires the eyes of a Consultant au fait with symptoms!
Nowt is TMI on here we discuss everything, even menopause ;-)
Anything with 'isis' is due to inflammation of some kind, i.e. appendicitisis, tonsillitis ........ [pity I can't spell

]
As oestrogen levels drop the body may become dry: inside and out; deep in the ears, nostrils, eyes, vagina, anus, skin ......... bladder conditions may become worse = vaginal atrophy. Do read the 'bladder issues' thread and any on VA. VA can be eased by appropriate treatment and mimics repeated urine infection-type symptoms
really, really well.
Anusol is what is recommended by GPs for itchy bottoms.
Savlon is my go-to, less embarrassing to ask for

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Ask your GP for an appropriate referral to a dermatologist with knowledge of LS. U may find from your local Health Authority web-sites if there is one at your Hospital.