Pain on the lateral side of the knee is caused by excessive stress or when which muscle is tight and contracted?

Which of the following is one of the most common characteristics of a stroke?

A) Weakness on one side of the body B) Sudden onset of bizarre behavior C) Sudden, severe headache D) Projectile vomiting

For the following questions, use an ICD-9-CM code book and select the appropriate code(s) for the diagnostic statements given

Spastic paraplegia, hereditary