Pituitary-Dependent Cushing’s Disease
Pituitary-dependent Cushing's disease is a specific subtype of Cushing's syndrome caused by excessive secretion of adrenocorticotropic hormone (ACTH) from a pituitary adenoma, typically a microadenoma.…
Pinta Disease
Pinta is a chronic, non-venereal infectious skin disease caused by Treponema carateum, a bacterium closely related to the causative agent of syphilis. This condition is…
PIK3CA-Related Overgrowth Spectrum (PROS)
PIK3CA-related overgrowth spectrum (PROS) comprises a group of rare disorders characterized by somatic mutations in the PIK3CA gene, leading to abnormal tissue growth in multiple…
Philadelphia Chromosome Positive Chronic Myelocytic Leukemia
Philadelphia chromosome-positive chronic myelocytic leukemia (Ph+ CML) is a hematopoietic stem cell disorder characterized by unregulated myeloid cell proliferation, resulting from the formation of the…
Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia
Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL) represents a high-risk subtype of ALL, characterized by the presence of the BCR-ABL1 fusion gene resulting from a…
Pheochromocytoma
Pheochromocytoma is a rare catecholamine-producing tumor that arises from the chromaffin cells of the adrenal medulla. It is characterized by excessive secretion of epinephrine, norepinephrine,…
Phenylketonuria (PKU)
Phenylketonuria (PKU) is a rare but serious autosomal recessive metabolic disorder that affects the body's ability to metabolize the amino acid phenylalanine. Without prompt diagnosis…
Pharyngitis Due to Streptococcus pyogenes
Pharyngitis Due to Streptococcus pyogenes: Pharyngitis caused by Streptococcus pyogenes, also known as Group A Streptococcus (GAS), represents one of the most common and clinically…
Pertussis (Whooping Cough)
it is commonly known as whooping cough, is a highly contagious respiratory infection caused by Bordetella pertussis. This bacterial illness is characterized by severe coughing…
Pernicious Anemia
Pernicious anemia is a form of megaloblastic anemia resulting from vitamin B12 deficiency due to impaired absorption in the gastrointestinal tract. It is classified as…