Hi,
The causes of tingling in face are –Stress , Anxiety , Side effects of medications , Migraine , Multiple sclerosis , Rolandic epilepsy, Nerve irritation and chemical poisoning .The symptoms are not related to Pituitary gland tumour and Aneurysm . Please go for an MRI brain and consult a neurologist to know the cause . Hope this helps you . Take care and regards !
It may also occur with peripheral nerve irritation as with some adverse effects of medicines, allergy. With proper rest and sleep if this sensation will go off there is nothing to worry.
If it continues the neurologist has to consider all options. Facial nerve examination may also throw some light. Take care!