Pellagra
Pellagra is a nutritional disorder resulting from a deficiency of niacin (vitamin B3) or its precursor tryptophan. Historically referred to as the “disease of the…
Pediculosis Pubis
Pediculosis pubis, commonly known as pubic lice or "crabs," is an infestation caused by Phthirus pubis, a parasitic insect that feeds on human blood. These…
Pediculosis Corporis
Pediculosis corporis, or body lice infestation, is a parasitic condition caused by Pediculus humanus corporis, an obligate ectoparasite that lives in the seams of clothing…
Pediculosis Capitis
Pediculosis capitis, commonly known as head lice infestation, is a widespread parasitic condition caused by Pediculus humanus capitis. This obligate ectoparasite affects the scalp and…
Pediatric Fever Without a Source
Fever without a source (FWS) in pediatric patients represents one of the most common and challenging presentations in clinical practice. This condition refers to a…
Peanut Allergy
Peanut allergy is one of the most prevalent and potentially life-threatening food allergies worldwide, particularly in children. This condition is characterized by an overactive immune…
PD-L1 Positive, EGFR-Negative, ALK-Negative Metastatic
Non-small cell lung cancer (NSCLC) encompasses a diverse group of lung malignancies, with metastatic cases requiring tailored treatment strategies. Among these, patients with PD-L1 positive,…
PD-L1 Positive Non-Small Cell Lung Cancer
Non-small cell lung cancer (NSCLC) accounts for approximately 85% of all lung cancers and remains a leading cause of cancer-related deaths globally. A subset of…
PD-L1 Positive Squamous Cell Carcinoma of the Esophagus
Esophageal squamous cell carcinoma (ESCC) represents a predominant histological subtype of esophageal cancer, particularly in high-incidence regions across Asia and parts of Africa. It arises…
PD-L1 Positive Cervical Cancer
Cervical cancer, driven predominantly by persistent human papillomavirus (HPV) infection, remains a leading cause of cancer-related mortality in women worldwide. The identification of Programmed Death-Ligand…