###Human: Can recurrent high fever in old people lead to any serious issue? ###Assistant: Hi. I want to assure you that do not worry as everything is going to be fine soon. I have thoroughly gone through your case and can well understand your genuine concerns. Fever is just a symptom of other illnesses like infection, inflammation etc. So, we have to rule out some basic infections possible in him. Also some background of your father's overall health is needed.  Please answer the following questions to assist him in the best possible way:- 1. Does he have or had any of the following symptoms in the last week, the symptoms include sore throat, neck glands enlargement or enlarged lymph nodes? 2. Did he experience any painful urination, frequent urination or urge to urinate even after coming from restroom, all time feeling of bladder fullness as if he needs to urinate? 3. Are there any symptoms of constipation, vomiting, nausea, diarrhea, abdominal pains, cough with/without sputum, nasal discharge, flu, eye redness, etc? 4. Does he have any skin condition/disease? 5. Is he diabetic or hypertensive? Whether he takes any regular medication? If yes, then please mention it. 6. Is there any allergic history for food or medication? 7. Is he a known hepatitis patient? 8. Does he have any gallbladder issues or history of kidney stones? Treatment will be decided with follow-up details.