Pericardial fremitus is a vibration felt on the chest wall due to the friction of the surfaces of the pericardium over each other. See pericardial friction rub for the auditory analog of this sign.epatic fremitus is a vibration felt over the patient's liver. It is thought to be caused by a severely inflamed and necrotic liver rubbing up against the peritoneum. The name 'Monash sign' has been suggested for this clinical sign, after the Monash Medical Centre in Melbourne, Australia.
Working and SSDI Benefits. Generally, you can't start doing substantial gainful activity (SGA) and continue to receive disability benefits. In a nutshell, SGA means you are working and making more than $1,130 per month in 2016 (or $1,820 if you're blind). There are exceptions to this rule, however. For SSDI recipients, there is a trial work period during which you can make more than the SGA amount without losing your benefits. (For a discussion of how much you can work when applying for benefits, see our section on working and eligibility for Social Security disability.)
If you collect Social Security and you're younger than full retirement age, then you can earn up to  $16,920 in income in 2017 and still collect 100% of your Social Security payment.