Anencephaly is a condition wherein the child is born with a poorly developed skull, scalp, and brain. Babies with anencephaly usually only survive for a few hours or days after birth since a portion of the fetal skull and brain are missing.

Renal angiomyolipoma is a benign tumor that forms in the kidney. This lump is made up of blood vessels, immature smooth muscle fibers, and fat cells. Though anyone can get angiomyolipoma, it is more common in women over 50.

Anthrax is an infectious disease caused by a rod-shaped, spore-forming bacteria called Bacillus anthracis. These are found in soil and affect both wild and domestic animals. If someone comes in contact with infected animals, they can contract anthrax.

Angelman syndrome is a rare genetic disorder that leads to delayed development, speech impairments, and intellectual disabilities in children. The signs may develop during infancy and manifest even after the child becomes an adult.

Any pain or discomfort in the chest is known as angina. It may develop as a result of stress, exercise, or other health problems wherein the heart muscles stop receiving enough oxygen-rich blood.

An aortic dissection is a major health condition that is caused by a tear in the inner layer of the body’s main artery. When blood rushes through this rupture, the inner and middle layers of the aorta split.

Aphasia is a condition that impairs an individual’s ability to communicate through language. It is caused by damage to the brain, specifically in the areas responsible for speech processing. Aphasia can be a frustrating and isolating condition for those affected.

Atrial flutter is a common health condition in which the heart’s upper chambers or atria pound quickly and consistently. It can also cause the lower chambers to beat faster but not as fast as the upper chambers.