Symptoms of respiratory acidosis include fatigue, becoming tired easily, confusion, shortness of breath and sleepiness, states Healthline. A person with metabolic acidosis may experience rapid and shallow breathing, confusion, fatigue, headaches, sleepiness, lack of appetite, and a fruity-smelling breath, which is a sign of diabetic acidosis.
Acidosis occurs when the kidneys and lungs are unable to maintain the body's required pH balance, resulting in an excess of acid in the body's fluids. In metabolic acidosis, the kidneys fail to eliminate the build-up of acid or the body rids itself of too much alkalinity, explains Healthline. In respiratory acidosis, the lungs are unable to remove carbon dioxide effectively, causing carbon dioxide to build up in the blood and make it more acidic.