Acute Arterial Thromboembolism
Acute arterial thromboembolism is a life-threatening condition caused by the sudden blockage of an artery due to a blood clot. This blockage disrupts blood flow…
Acute Angle-Closure Glaucoma
Acute angle-closure glaucoma is a medical emergency that can lead to rapid vision loss if untreated. It occurs when the drainage angle in the eye…
Acute Adrenocortical Insufficiency
Acute adrenocortical insufficiency, also known as adrenal crisis, is a life-threatening condition that occurs due to an acute deficiency of cortisol and other essential adrenal…
Active Tuberculosis: Symptoms, Diagnosis, and Treatment
Tuberculosis (TB) remains a significant global health challenge, particularly in its active form, which is highly infectious and potentially life-threatening. Understanding active tuberculosis, its symptoms,…
Active Lupus Nephritis
Lupus nephritis is a severe manifestation of systemic lupus erythematosus (SLE), characterized by inflammation of the kidneys. Active lupus nephritis demands timely diagnosis and management…
Activated Phosphoinositide 3-Kinase Delta Syndrome (APDS)
Activated Phosphoinositide 3-Kinase Delta Syndrome (APDS) is a rare primary immunodeficiency caused by genetic mutations in the PIK3CD or PIK3R1 genes, which regulate the phosphoinositide…
Actinomycotic Mycetoma
Actinomycotic mycetoma is a chronic, progressive infection caused by actinomycetes, a group of filamentous bacteria. It primarily affects the skin, subcutaneous tissue, and occasionally deeper…
Actinomycosis: Causes, Symptoms, and Treatment
Actinomycosis is a rare but serious bacterial infection that primarily affects soft tissues, often leading to the formation of abscesses and tissue fibrosis. This guide…
Actinic Prurigo: Symptoms, Causes, and Treatment
Actinic prurigo (AP) is a chronic photosensitive skin condition that primarily affects individuals with a genetic predisposition, especially those of Native American descent. This disorder,…
Actinic Keratosis on the Trunk or Extremities
Actinic keratosis (AK) is a common skin condition caused by prolonged exposure to ultraviolet (UV) radiation, primarily affecting sun-exposed areas. When actinic keratosis occurs on…