Somewhere along the way Internet surfers developed the opinion that they could enter a part of a word (particularly one as hard to spell as hemorrhoids) like hemmo and search engines would know what they were searching for hemorrhoids and in addition would present websites related to the same.
Hemmorhoids is a common misspelling of hemorrhoids so it's natural that those attempting to abbreviate their ways out of not knowing the correct spelling would lead with hemmo.
Our Google search of hemmo actually turns up some interesting results, most of which are not related to hemorrhoids. There's a Dr. Hemmo, a Roland Hemmo in Wikipedia, and even a Hemmo.org and Hemmo Pharma - none of which are related to hemorrhoids, unfortunately for the short cutters. Actually a cursory view of the top 100 sites listed for 'hemmo' reveals that none of them are related to this condition.
This website about hemorrhoids is quite informative and offers a highly successful herbal remedy for home treatment. After all, it's a bit of a disgusting ailment and one that is preferably cured in privacy if at all possible.
Hemorrhoids are typically characterized by itching and burning around the anus and sometimes there's blood. Bleeding can also be an indication of more serious medical problems and shouldn't be ignored. The itch and burn can often be relieved with a good anti-itch medication like 1% hydrocortisone available over the counter but to get rid of hemorrhoids, it may require treatments which will reduce and eliminate swelling.