I had bought a Male Adult Betta 3 months ago in August. He is a red crowntail, and has been generally healthy since I have had him, until a few weeks ago. I had some problems with constipation, but I had held up a mirror to him, and he had gone to the bathroom and the mild swelling went down. I had noticed his scales starting to become more defined, able to see the end of the scales like they were lifting up a bit. I looked today and the scales have lifted up a bit more, but it does not look too awful. His stomach, where normal swelling occurs with dropy in Bettas, is not swelled but looks lumpy. I have not seen any other symptoms of dropsy, except for the fact that he swims a little odd when he is excited to see me or is energetic. He does the normal Betta happy dance, sometimes turns on his sides and does some crazy looking flips in the water, but I'm not sure if that's normal. He also hangs around the bottom a little forwards night, but I assume he is getting sleepy because he doesn't stay in one place for more than around one minute.
Other info:
5.5 gallon tank, heated with a filter
Bought from PetCo (bad decision)
He has a white blob underneath his chin which I never understood.
also white dots on his head, but they seem to be small holes in his head.
His scales near his stomach are a bit oddly shaped.