The Board has determined that a VA examination is needed to determine the nature and etiology of the left-hand disability, as there is evidence of current symptoms and in-service complaints. The Veteran's service records indicate issues with gripping in his left wrist, puncture injuries, and arthritis in his hands during service.

The appeals for service connection for left-hand, right-hand, and left hip disabilities were granted, while the appeals for a right hip disability and left foot disability were denied.

The Board remands the service connection claims for various disabilities and TDIU due to the need for additional medical evidence.

The Board denied service connection for PTSD, bilateral hearing loss, allergic rhinitis, sinusitis, unspecified anxiety disorder, seborrheic dermatitis, and denied increased ratings for left shoulder disability, myalgia, left-hand disability, right-hand disability, right shoulder disability, kidney stones, plantar fasciitis, lung disability, actinic keratosis, and squamous cell carcinoma. The Board remanded service connection claims for several conditions.

The Board denied service connection for bilateral tinnitus, ED, OSA, visual impairment, left-hand disability, and acquired psychiatric disability. However, it granted service connection for a back condition (lumbosacral strain) and remanded claims for other disabilities including right hand, left elbow, right elbow, and right knee.