<s>[INST] My 3 1/2 year old has been complaining on and off of pain in his penis. Usually he complains during car rides and says it s squishing his penis. A week ago he got very sick and his pediatrician examined him. He has the flu and strep. He is on antibiotics for the strep. During this week he has been exceedingly irritated, understandably so. However, his chief complaint is penis pain. He squirms in bed, kicks his legs and grabs at his penis crying that it hurts. This has been going on for three days straight. His pediatrician examined his penis and did a urinalysis without any findings. I am at my wits end. Thank you [/INST] he might be having urinary tract infection or acute dehydration which might be the cause of penis pain.. urine analysis is negative,so go for urine culture is more sensitive and reliable, do blood urea and creatinine to rule out UTI and renal infection, in some condition,flu will be associated with UTI also which can be diagnosed only by culture </s>