Thank you for the information provided.
I am sorry I do not have number that you can send photos to.
I will try and help you without the photo images.
From your history and description , it looks like you may have pediculosis of the scalp area that you may have contracted from the train where you may have picked up on nits.
I would suggest that you should apply Permethrin 1 % shampoo and Permethrin 1 % lotion on the scalp over night . Wash off the next day .
Continue with the Betamethasone lotion application on the areas affected as it helps to reduce the hypersensitivity to the nit or louse
The ketoconazole did not work as it is an anti fungal agent .
The application of Permethrin will help solve your problem/ This is a very common problem seen amongst individuals traveling .
This would help you correct your issue.
Do you Agree with what I have mentioned?
DO you have any further queries.
Please do feel free to ask me any further queries.
Do you want me to release the rating service application on your page?