Usually, diarrhea is caused by a virus that infects the gut. Some people call it intestinal flu or stomach flu.. It can also happen due to: 1  Alcohol abuse. 2  Allergies to certain foods. 3  Diabetes. 4  Diseases of the intestines (such as Crohn's disease or ulcerative colitis). 5  Eating foods that upset the digestive system.
You are allowed to continue working and still receive Social Security benefits. However, if you are under full retirement age, you are limited in the amount you can earn. In 2011, that amount is $14,160. If you are under full retirement age, then you will have to repay $1 for every $2 year earn over that limit.
To qualify for Social Security Disability Insurance, you must have earned enough quarters of coverage (also called credits of coverage) to meet the minimum requirements. Quarters of coverage are based upon your annual earnings and you can earn up to four credits each year. In the year 2009, you receive one credit for each $1,090.00 in earned income, so if you earn at least $4,360.00 during the year, you will receive credit for four quarters.