Opportunistic infections (OIs) are infections that occur more frequently and are more severe in individuals with weakened immune systems, including people with HIV.
Being nostalgic means to miss the past time. It seems that a real life was in the past because now in the present is different, probably things changed and we know that never is going to be the same. It leads to a nostalgic feeling.
Like Us On Facebook. Upon asking someone what it means to be lonely, the response may be that it's a place that only sad, depressed people know. Much to the contrary, loneliness is quite a complex enigma that is potentially symptomatic of various situations.