Introduction Chickenpox is a highly contagious infection caused by the Varicella-zoster virus (VZV). It mainly affects children, but teenagers and adults can also develop the disease, often with more severe symptoms. The virus spreads easily through coughing, sneezing, or direct contact with blister fluid. After recovery, the virus remains dormant in nerve tissue and may

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Introduction Liver cancer is a malignant tumor that begins in the cells of the liver. If left untreated, it can progress to liver failure and become life-threatening. Liver cancer may be primary (originating in the liver) or secondary (spreading from another organ). The most common primary type is hepatocellular carcinoma (HCC).

Renal function tests are essential medical investigations used to assess how well the kidneys are working. They help doctors diagnose kidney disease early, monitor disease progression, and guide treatment decisions. Because the kidneys play a vital role in filtering waste, balancing fluids, and regulating electrolytes, even mild dysfunction can have serious consequences if ignored.

Analgesics are drugs that relieve pain without causing loss of consciousness. They act on both the peripheral and central nervous systems to block pain perception. These medications are commonly used for headaches, muscle pain, arthritis, and post-surgical pain.