All illnesses from A to ZA B C D E F G H I J K L M N O P Q R S T U V W X Y ZIllness with the letter "C"Cardiac arrhythmiaCardiovascular diseasesChronic acidosis Chronic obstructive pulmonary disease (COPD)Circulatory problemsColdsConstipationCrohn's diseaseCystic fibrosisCystitis