Smallpox Vaccination
Smallpox vaccination has played a pivotal role in one of the greatest achievements in medical history—the global eradication of smallpox. Although routine immunization ceased decades…
Small Lymphocytic Lymphoma with 17p Deletion
Small lymphocytic lymphoma (SLL) with 17p deletion represents a high-risk subset of this indolent B-cell non-Hodgkin lymphoma. The loss of the short arm of chromosome…
Small Lymphocytic Lymphoma
Small lymphocytic lymphoma (SLL) is an indolent B-cell non-Hodgkin lymphoma (NHL) that is biologically and clinically similar to chronic lymphocytic leukemia (CLL). These two conditions…
Small Cell Lung Carcinoma
Small cell lung carcinoma (SCLC) is a highly aggressive form of lung cancer characterized by rapid growth and early metastasis. Accounting for approximately 10–15% of…
Sleepiness Due to Shift Work Sleep Disorder
Shift Work Sleep Disorder (SWSD) is a circadian rhythm disorder that arises from a misalignment between an individual’s biological clock and their work schedule. It…
Sleepiness Due to Obstructive Sleep Apnea
Obstructive Sleep Apnea (OSA) is a prevalent and serious sleep disorder characterized by repeated interruptions in breathing during sleep. One of the most debilitating symptoms…
Sleep-Onset Insomnia
Sleep-onset insomnia, also referred to as initial insomnia, is a common sleep disorder defined by difficulty initiating sleep at bedtime. Despite sufficient opportunity and a…
Sleep Maintenance Insomnia
Sleep maintenance insomnia, also known as middle insomnia, is a chronic sleep disorder marked by frequent nighttime awakenings and difficulty returning to sleep. Unlike sleep-onset…
Skin Ulcer
Skin ulcers are open sores or lesions resulting from poor blood circulation, prolonged pressure, or underlying medical conditions. These chronic wounds are a significant concern…
Skin Irritation
Skin irritation is a widespread dermatological concern that affects individuals across all age groups. It presents in various forms—rashes, itching, redness, stinging, or dryness—and may…
