<s>[INST] I have severe headache from last 2 years. MRI scan showed that pituitary gland is slightly bulky with size 14mm TR*12mm AP*9mm CC. I m using medicine since 1 year. But still I m suffering from headache if I don t use medicine for 1 day. So what I should do and which doctor I have to consult. Pls answer my question and suggest me. [/INST] Hello. I have been through your question and understand your concern. Pituitary gland enlargement is more frequently caused by a benign condition, called fibroadenoma, with other options being an inflammation of the gland. I do not know what type of treatment are you taking and if this pituitary enlargement is the cause of your headache. But in these situations you should follow the next steps.1. Blood test for hormones (GH, PRL, IGF1, ACTH, )2. MRI for the seller region3. Visual field test4. Endocrinological consult5. Neurosurgical consult. Hope this helps, please feel free using MHC again for further questions. </s>