Symptoms and Causes

Understanding Merkel Cell Carcinoma Merkel cell carcinoma is an uncommon skin cancer that typically appears as a lump. This fast-growing cancer is also known as neuroendocrine…

What Is Geographic Tongue? Geographic tongue is a harmless condition that affects the tongue’s surface. Normally, the tongue has small bumps called papillae that give it…

Overview A swollen knee occurs when extra fluid accumulates in or around the knee joint, a condition medically referred to as knee effusion. This swelling can…

Overview Dermatographia is a skin condition where light scratches cause raised, red lines to appear. These skin markings usually fade within 30 minutes. Some people call…

What is Agoraphobia? Agoraphobia is an anxiety disorder where people fear and avoid specific places or situations that might trigger panic or feelings of helplessness. Those…

Understanding Tear System Issues Tear glands (lacrimal glands) sit above each eye. They make fluid that keeps your eyes moist. Every time you blink, tears spread…

What Are Kidney Cysts? Kidney cysts are fluid-filled, round pouches that develop on or within the kidneys. Most commonly, these are simple kidney cysts that rarely…

Understanding Newborn Yellowing Newborn yellowing (jaundice) happens when a baby’s skin and eyes turn yellow due to high levels of bilirubin in the blood. Most babies…

Overview Mental illness includes various mental health conditions that affect mood, thinking, and behavior. These include depression, anxiety disorders, schizophrenia, eating disorders, and addictive behaviors. Many…

Overview Chronic traumatic encephalopathy (CTE) is a degenerative brain disorder linked to repeated head injuries. The condition progressively worsens over time as nerve cells in the…