Hi. Thanks for the query.. The symptoms of twitching ] of lip on one side along with one side of face seems to be due to Hemifacial Spasms and occurs commonly due to disorders or disturbances associated with Facial Nerve that is seventh cranial nerve and supplies muscles of face.. Vitamin B12 deficiency and anxiety can also be a cause, I would suggest you to consult a Neurophysician and get evaluated and a thorough clinical evaluation and investigations like blood test, MRI scan, Electromyogram, Nerve conduction velocity can help in diagnosis and treatment can be done accordingly.. As far as Catalyst therapy is concerned it can be helpful to some extent but before it the actual cause of the problem and if there is nerve related issue the reason behind it has to be ruled out as it times wrong treatment can become harmful than being useful.. You can be given medication like Vitamin B12 and Pregablin while treatments like Botox injection or surgical correction of compressed nerve root can be done.. Hope this helps.. Regards..