 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  new/worsening bone pain, easily broken bones, increased thirst/urination, mental/mood changes (such as depression). Get medical help right away if you have any very serious side effects, including: chest/jaw/left arm pain, fast/irregular heartbeat, severe dizziness, fainting, weakness on one side of the body, trouble speaking, seizures. Children using histrelin may be at risk for increased pressure around the brain (intracranial hypertension). Get medical help right away if your child has any of these very serious side effects: nausea/vomiting that doesn't stop, headache that is severe or doesn't go away, eye pain, vision changes (such as blurred/double vision, decreased vision), ringing in the ears. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side </s>