Common symptoms include: 1  feeling very tired all the time (fatigue) 2  weight loss. 3  weakness. 4  joint pain. 5  in men, an inability to get or maintain an erection (erectile dysfunction) 6  in women, irregular periods or absent periods.
While both programs supplement the income of individuals who are unable to work due to a medical disability such as blindness, SSDI and SSI serve two distinct populations. The main difference between SSDI and SSI is eligibility. SSDI is available to those who have paid into the system through taxable income. SSI, on the other hand, serves as a safety net for those who do not qualify for SSDI and have limited means.
Supplemental Security Income. Not to be confused with Social Security Disability Insurance. Supplemental Security Income (SSI) is a United States government program that provides stipends to low-income people who are either aged 65 or older, blind, or disabled. Although administered by the Social Security Administration, SSI is funded from the U.S. Treasury general funds, not the Social Security trust fund.