Read the following context and answer the question.
Context: dou was sick for 2 days . the night b4 , she woke up with a low grade fever of about 37.7 degree . so as usual , the daddy pasted a fever patch on her tiny forehead .
Question: What caused Dou 's father to apply a fever patch to her forehead ?
Answer:


The girl is sick , and this may help treat the symptoms of the illness