The Board has granted service connection for calluses of the right foot, finding that they are related to service and resolving all reasonable doubt in favor of the Veteran.

The Board has granted entitlement to TDIU due to the combined effects of service-connected disabilities, including PFB and bilateral foot calluses. The decision is based on the Veteran's credible testimony regarding his inability to work due to these conditions.

The Veteran's left ear hearing loss was not granted a compensable rating.,For the period from March 23, 2017, to April 27, 2018, the Veteran received a maximum schedular rating for IBS under Diagnostic Code 7319. For the period since April 27, 2018, the Veteran's IBS has been manifested by moderate symptomatology with frequent episodes of bowel disturbance.,The Veteran's sinusitis did not meet criteria for an increased rating as it was not characterized by incapacitating episodes or a history of sinus surgery.,The calluses on the bilateral feet were not painful and collectively measured less than 144 sq. in., thus not meeting criteria for an increased rating.,Right and left knee disabilities have been manifested by findings of limitation of flexion resulting in additional functional loss, but did not meet criteria for a higher rating as they are already at the maximum schedular rating under Diagnostic Code 5260.,The Veteran's right knee instability was granted an initial 30 percent rating and left knee instability was granted an initial 10 percent rating based on moderate recurrent lateral instability.,Radiculopathy of the bilateral lower extremities has been rated at 20 percent, consistent with moderate incomplete paralysis of the sciatic nerve.,The Veteran's TMJ disability is related to a service-connected disability and thus granted service connection.,Crohn's Disease was not found to be incurred or aggravated during service.,Respiratory disability and sleep apnea were not found to be incurred or aggravated during service.,Right and left ankle disabilities were not shown in service and are not otherwise related to service.

The Veteran's service-connected calluses of the left foot and right foot have been granted increased disability ratings to 20 percent each, effective prior to June 19, 2015.

The Board has granted service connection for calluses of the right and left feet, finding that they are likely due to conditions present during active duty. Service connection was also granted for a right knee disorder, but further examination is needed as there may be evidence of arthritis.