Photo Smudges

This photo has strange smudged areas and lines on it.   Does this mean it's been altered?

All these queries are based not on the actual photographs, but on scanned jpeg images published on web-sites. Jpeg images are great, they take a large image and compress it down to a download friendly-size so that you don't have to wait until something the size of a planet crawls down your phone line. Unfortunately there's a trade-off with this. Jpeg's use a 'losey' compression algorithm which mean the image loses detail. Usually this doesn't matter as the detail lost is minor and the algorithm makes a good job of disguising it.  But if you look really hard, or magnify bits, you're always going to see flaws.  

It doesn't mean the original photo was faked.