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.
Confidence votes 86. Sensation: something that is felt or sensed. well if you mean what does sensation mean then it is a physical feeling or perception resulting from something that happens to or comes into contact with the body.if that is not what you mean then i apologise but do not know.hope this was helpful :P.ach type of the principal type of sensation that we experience pain, touch, sight ,sound and so forth is called modalities of sensation. We experience these different modali â¦ ties of sensation, while nerve fibers transmit only impulses.