Why do children become very irritable after a high fever seizure?

Patient's question:

The child is currently 2 weeks and 9 days old. Around week 8, he had another episode of high fever and convulsions. His father also had convulsions when he was young. The child has been on an IV drip for 4 days now, but during this period, he occasionally gets very irritable, starts tantrums when he's unhappy or doesn't get his way, hits people, and says "get out." Last year, after being sick, he had similar behavior too. During his hospital stay, both an electrocardiogram (ECG) and an electroencephalogram (EEG) were conducted, and both were normal.
Previous treatment and outcomes: The ECG and EEG were normal, and the C-reactive protein level was around 13, so he was discharged. However, after taking medication, he started vomiting. After his nap, he vomited twice more, with a temperature of 37.5°C. He was given another IV drip, which was similar to the previous one.
What kind of assistance is needed:
1. Why is the child so irritable?
2. What causes the vomiting?

Doctor's answer:

High fever seizures are not uncommon. They are more common in children, especially in children with high fever. It is the excitement of the brain nerves caused by low-grade fever that leads to convulsions and seizures.
Advice: A bad temper indicates a strong personality, meaning it is natural. The reason for dry vomiting is usually due to poor digestion or high fever seizures. It is recommended to keep fever-reducing medication on hand to prevent low-grade fever, so that it can be used when needed to avoid another high fever seizure. Wishing you all health.
The above advice is for the question "Why do children become very irritable after high fever seizures?" I hope it helps you. Wishing you good health!

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