Any injury or illness that makes you mentally or physically unable to complete your job qualifies you for short-term or long-term disability insurance offered by most insurance companies. However, for Social Security Disability Insurance it must be medical conditions such as cardiovascular conditions (e.g. heart failure or coronary artery disease), senses and speech issues (e.g. vision and hearing loss), respiratory illnesses (e.g. COPD or asthma), and neurological disorders (e.g. MS, cerebral palsy, Parkinson's disease, or epilepsy).