Paroxysmal Nocturnal Hemoglobinuria
Paroxysmal nocturnal hemoglobinuria (PNH) is a rare, acquired hematologic disorder marked by chronic intravascular hemolysis, bone marrow failure, and a heightened risk of thrombosis. It…
Paroxysmal Atrial Tachycardia
Paroxysmal atrial tachycardia (PAT) is a type of supraventricular tachycardia (SVT) characterized by sudden, episodic bursts of rapid heart rate originating from an ectopic focus…
Paroxysmal Atrial Flutter
Paroxysmal atrial flutter is a type of supraventricular tachycardia marked by intermittent episodes of rapid and regular atrial contractions. Unlike persistent or chronic atrial flutter,…
Paroxysmal Atrial Fibrillation
Paroxysmal atrial fibrillation is a subtype of atrial fibrillation characterized by sudden and recurrent episodes of irregular heart rhythm that typically resolve on their own…
Paronychia
Paronychia is an infection or inflammation of the periungual tissue, which surrounds the fingernails or toenails. It is one of the most common infections affecting…
Parkinsonism
Parkinsonism refers to a group of neurological disorders characterized by symptoms similar to those of Parkinson’s disease. These include bradykinesia, rigidity, resting tremor, and postural…
Paratyphoid Fever
Paratyphoid fever is a systemic bacterial infection caused by Salmonella enterica serovars Paratyphi A, Paratyphi B, and Paratyphi C. It is part of the enteric…
Parathyroid Hyperactivity Localization
Parathyroid hyperactivity, typically associated with primary hyperparathyroidism, results from excessive secretion of parathyroid hormone (PTH). Accurate localization of hyperfunctioning parathyroid tissue is essential to guide…
Parathyroid Carcinoma with Hypercalcemia
Parathyroid carcinoma is a rare but aggressive endocrine malignancy originating from the parathyroid glands. It accounts for less than 1% of primary hyperparathyroidism cases yet…
Parasitic Infection
Parasitic infections remain a significant global health concern, especially in regions with limited access to clean water, sanitation, and healthcare. A parasitic infection occurs when…