Yellow edge around nasal dischargeNasal hypophysectomy is a surgical procedure performed to treat hyperpituitarism due to pituitary gland tumors. During postoperative care and follow-up, the appearance of light-yellow at the edge of otherwise clear nasal discharge in the dressing indicates leakage of cerebrospinal fluid (CSF). This is called the halo sign and is indicative of a CSF leak. Dry mouth after nasal hypophysectomy is normal because the client breathes through the mouth due to the nasal packing. Neck rigidity could be an indication of infection, such as meningitis following the surgery. A fall in blood pressure upon standing is called orthostatic hypotension and is a side effect of bromocriptine.