Possible signs and symptoms in anyone older than the age of 2 include: 1  Sudden high fever. 2  Stiff neck. 3  Severe headache that seems different than normal.  Headache with nausea or 1  vomiting. Confusion or difficulty concentrating. 2  Seizures. Sleepiness or difficulty waking.  Sensitivity to 1  light. No appetite or  thirst.
Lexis (linguistics) In generative linguistics, a lexis or lexicon is the complete set of all possible words in a language. In this sense, child, children, child's and children's are four different words in the English lexicon. In systemic-functional linguistics, a lexis or lexical item is the way one calls a particular thing or a type of phenomenon.
Lexile Levels. The Lexile measure is a number indicating the reading demand of the text in terms. of the semantic difficulty (vocabulary) and syntactic complexity (sentence length). The Lexile scale ranges from 200 to 1700 Lexiles, although actual Lexile measures. can range from below zero to above 2000 Lexiles.