Which are the early (prodromal) clinical manifestations of hepatitis. (Select all that apply).

A. Traveling abroad recently: While international travel can expose individuals to infectious diseases, it is not the most concerning factor in this case compared to his communal living situation.

B. Living in a large, crowded communal setting: Crowded living conditions significantly increase the risk of meningitis transmission, especially for bacterial types like Neisseria meningitidis which spread via respiratory droplets.

C. An infection of the brain tissue, typically due to a virus or bacteria: This describes encephalitis, not meningitis. Meningitis affects the protective membranes, not the brain tissue itself.

D. An inflammation of the protective membranes around the brain and spinal cord (meninges): This is the correct definition of meningitis and is the pathological hallmark of the disease.

E. Having an allergy to medications: Having an allergy to medications is important for safe patient care and medication administration, but it is not a risk factor for acquiring meningitis.

F. An inflammation of the lungs caused by a viral or bacterial infection: This describes pneumonia, not meningitis. It is unrelated to the direct cause of meningitis.

A. Three: Up to three bowel movements per day is generally considered the upper limit of normal for stool frequency in adults. This range accommodates individual variation while distinguishing normal from diarrhea.

B. Five: Five stools per day exceed the typical upper limit and may indicate diarrhea or an underlying gastrointestinal disorder if persistent, rather than normal bowel habits.

C. Two: Two stools per day fall well within the normal range but do not represent the upper limit. Normal stool frequency can range from three times per day to three times per week.

D. Seven: Seven stools per day indicate frequent bowel movements consistent with diarrhea, which is above normal frequency and warrants further assessment for underlying causes.