Category: H
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Hallervorden Spatz syndrome
This extremely rare condition is believed to be triggered by an accumulation of iron in specific regions of the brain. The symptoms, which progressively worsen, typically manifest in early childhood and encompass abnormal muscle stiffness and spasms.
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Hairy cell
A hairy cell is an unusually large, abnormal white blood cell characterized by numerous hair-like extensions. These cells are associated with a rare type of leukaemia called hairy cell leukaemia, during which they multiply in the blood, bone marrow, liver, and spleen.
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Hair cycle
The cycles of activity within a hair follicle consist of two primary stages: the active stage, where new hair is produced, and the resting stage, during which cell activity diminishes and halts. The active stage endures for a few years until the hair achieves its maximum length. When the resting phase takes place, the hair…
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Hairball
A hairball located in the stomach, which can be found in individuals who habitually suck or chew on their hair due to nervousness.
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Hailey–Hailey disease
Hailey-Hailey disease, also referred to as benign familial pemphigus, is a type of blistering skin disease that primarily affects the neck, armpits, and groin. This condition tends to have a familial pattern, running in families.
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Haemostatic drugs
Haemostatic drugs are used to treat bleeding disorders and manage bleeding. These preparations aid in blood clotting and are administered to individuals with deficiencies in clotting factors. For instance, factor VIII is employed in treating haemophilia. Additionally, drugs like tranexamic acid, which prevent the breakdown of fibrin in clots, can also assist in stopping bleeding.…
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Haemorrhagic shock
Physiological shock, a dangerous condition characterized by a severe reduction in blood flow to body tissues, occurs due to significant blood loss.
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Haemangioblastoma
Haemangioblastomas are a rare form of brain tumor composed of blood vessel cells. They develop slowly as cysts, typically in the cerebellum, and are mostly noncancerous. Symptoms may include headache, vomiting, nystagmus (abnormal jerky eye movements), and ataxia (lack of muscle coordination) if the tumor is located in the cerebellum. Surgical removal is often feasible…
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Health and driving
The safety of driving is partly contingent on the driver’s health. Any medical or health condition that interferes with the driver’s physical health or compromises cognitive functions like decision-making, attentiveness, or reaction time heightens the likelihood of harm to not just the driver, but also to other motorists and pedestrians. One of the most clear-cut…
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Hard chancre
A sore, typically appearing on the genital area, is a characteristic feature of the initial stage of syphilis, which is a sexually transmitted infection. This ulcer is commonly referred to as a syphilitic ulcer.