Clinically, most pineal cysts do not show symptoms, but when the cysts are large in size, most of the symptoms are neurological compression and intracranial hypertension symptoms such as headache and nausea. Pineal cysts are cysts located in the pineal region, which are benign lesions. Generally, pineal cysts are small in size and do not compress the surrounding brain tissues, so they do not show symptoms. When pineal cysts are large in size, they can compress the surrounding brain tissues, causing obstruction of cerebrospinal fluid circulation, resulting in increased intracranial pressure, headache, nausea, vomiting, blurred vision and other symptoms, which can change with body position, and their compression of the pituitary gland can lead to reduced secretion of gonadotropins, causing endocrine disorders. Hearing loss, impaired visual field, and limb motor dysfunction may also occur. If the corresponding clinical manifestations occur, you should go to the hospital in time, and formulate an appropriate treatment plan after a detailed examination by a professional doctor.