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Hernia
A hernia occurs when an internal organ or tissue bulges through a weak spot in the muscle or connective tissue that normally contains it. This can result in a noticeable lump or bulge, often accompanied by pain or discomfort, particularly when lifting heavy objects, coughing, or straining.
Hereditary neuropathy with pressure palsies (HNPP)
Hereditary Neuropathy with Pressure Palsies (HNPP) is a genetic disorder that affects the peripheral nerves, leading to recurrent episodes of numbness, tingling, and muscle weakness. These symptoms are typically triggered by minor trauma or pressure to nerves, such as prolonged sitting or repetitive movements. HNPP is caused by mutations in the PMP22 gene, which provides instructions for producing a protein essential for the function of myelin, the protective covering around nerves.
Herceptin (trastuzumab)
Herceptin, the brand name for trastuzumab, is a monoclonal antibody used as a targeted therapy for certain types of breast and stomach cancers. It specifically targets the human epidermal growth factor receptor 2 (HER2), a protein that can promote the growth of cancer cells. Trastuzumab works by binding to the HER2 protein, inhibiting the proliferation of cancer cells that overexpress this receptor.
Hepatitis C
Hepatitis C is a viral infection that affects the liver. It can cause both acute (short term) and chronic (long term) illness. It can be life-threatening.
Hepatitis C is spread through contact with infected blood. This can happen through sharing needles or syringes, or from unsafe medical procedures such as blood transfusions with unscreened blood products.
Symptoms can include fever, fatigue, loss of appetite, nausea, vomiting, abdominal pain, dark urine and yellowing of the skin or eyes (jaundice).
Hepatitis B
Hepatitis B is a serious liver infection caused by the hepatitis B virus (HBV). It can lead to chronic liver disease, liver failure, liver cancer, and even death. Hepatitis B is a major global health problem, particularly in areas with high prevalence. 
Hepatitis B can cause a chronic infection and puts people at high risk of death from cirrhosis (severe scarring of the liver) and liver cancer.
It can spread through contact with infected body fluids like blood, saliva, vaginal fluids and semen. It can also be passed from a mother to her baby.
Hepatitis A
Hepatitis A is a highly contagious liver infection caused by the hepatitis A virus (HAV). It is a self-limiting disease, meaning it usually resolves on its own without long-term complications, although it can cause significant illness. Unlike hepatitis B and C, hepatitis A does not lead to chronic liver disease.