Health Conditions Starting With A — Research & Medical Insights

A rare esophageal disorder that prevents food from passing into the stomach.

A chronic skin condition causing pimples, blackheads, and cysts.

Attention-deficit/hyperactivity disorder affecting focus and impulse control.

A leading cause of vision loss in adults over 50 affecting the central retina.

Hay fever — nasal inflammation triggered by airborne allergens.

The most common form of dementia, causing progressive memory and cognitive decline.

A deficiency in red blood cells or hemoglobin leading to fatigue and weakness.

Excessive, persistent worry and fear that interferes with daily activities.

Narrowing of the aortic valve opening, restricting blood flow from the heart.

Inflammation of one or more joints causing pain, stiffness, and reduced mobility.

A chronic respiratory condition causing airway inflammation and breathing difficulty.

Buildup of plaques inside artery walls, narrowing blood vessels and raising cardiovascular risk.

An irregular, often rapid heart rate that raises stroke and heart failure risk.

A developmental condition affecting communication, behavior, and social interaction.

Inflammation of the appendix requiring urgent medical or surgical treatment.

A disorder in which the adrenal glands produce insufficient cortisol and aldosterone.

A benign tumor on the vestibulocochlear nerve causing hearing loss and balance problems.

A hormonal disorder from excess growth hormone in adulthood, enlarging hands, feet, and face.

Rough, scaly skin patches caused by sun damage that can progress to skin cancer.

Short-term inflammation of the bronchial tubes, usually following a viral upper respiratory infection.

Sudden loss of kidney function occurring over hours to days, often reversible.

Sudden inflammation of the pancreas, often from gallstones or alcohol use.

Short-term inflammation of the sinus cavities causing facial pain and nasal congestion.

Endometrial tissue grows into the uterine muscle wall, causing heavy and painful periods.

Frozen shoulder — stiffness and pain from inflammation and thickening of the shoulder joint capsule.

Inadequate production of adrenal hormones causing fatigue, weakness, and low blood pressure.

An anxiety disorder involving fear of places or situations that may cause panic or entrapment.

A genetic condition causing little or no melanin production, affecting skin, hair, and eyes.

A medical condition marked by impaired control over alcohol use despite harmful consequences.

Liver inflammation caused by chronic heavy alcohol use, ranging from mild to life-threatening.

An autoimmune condition causing patchy hair loss on the scalp and other body areas.

Amyotrophic lateral sclerosis — progressive loss of motor neurons causing muscle weakness and paralysis.

Headache, nausea, and shortness of breath from reduced oxygen at high elevations.

Lazy eye — reduced vision in one eye due to abnormal visual development in childhood.

The absence of menstrual periods in women of reproductive age.

Abnormal protein deposits accumulate in organs, impairing their function.

A small tear in the lining of the anus causing pain and bleeding during bowel movements.

A severe, life-threatening allergic reaction requiring immediate epinephrine.

Chest pain caused by reduced blood flow to the heart muscle.

Rapid swelling beneath the skin, often around the eyes and lips, from allergic or inherited causes.

A chronic inflammatory arthritis affecting the spine and sacroiliac joints.

An eating disorder marked by restriction of food intake and intense fear of gaining weight.

Loss of the sense of smell, which may be partial or complete, temporary or permanent.

An abnormal bulge in the wall of the aorta that can rupture if untreated.

Backward flow of blood through the aortic valve due to incomplete valve closure.

A language disorder affecting speech production, comprehension, reading, or writing after brain injury.

A rare disorder in which bone marrow fails to produce enough blood cells.

Irregular heartbeat — the heart beats too fast, too slow, or in an uneven pattern.

Accumulation of fluid in the abdominal cavity, often from cirrhosis or cancer.

A fungal infection caused by Aspergillus, most dangerous in immunocompromised patients.

An irregular cornea or lens curvature causing blurred or distorted vision at all distances.

Partial or complete collapse of a lung or lobe, reducing gas exchange.

A fungal skin infection between the toes causing itching, burning, and cracking.

The most common form of eczema, characterized by dry, itchy, inflamed skin.

A rapid, regular atrial rhythm that can lead to palpitations and clot formation.

A congenital hole between the heart’s upper chambers allowing abnormal blood flow.

The immune system attacks liver cells, causing chronic inflammation and potential cirrhosis.

Death of bone tissue due to interrupted blood supply, most often affecting the hip.

Bird flu — an influenza virus strain that can occasionally infect humans with severe outcomes.

The complete absence of sperm in semen, a major cause of male infertility.

Inflammation of the Achilles tendon, often from overuse in runners.

A rapidly progressing cancer of myeloid blood cells in the bone marrow.

Severe widespread inflammation of the lungs causing life-threatening hypoxia.

A rare cancer of the anal canal, often associated with HPV infection.

A fast-growing cancer of immature white blood cells, most common in children.

A life-threatening tear in the inner layer of the aorta, allowing blood to split the vessel walls.