Hammer toe
A condition in which the toe is flexed (curly), but with no abnormal rotation of the toe. Hammer toe may require surgical correction.
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- Hamstring
One of the prominent tendons at the back of the knee. The hamstrings are the side walls of the hollow behind the knee (popliteal space). Both hamstrings connect to muscles that flex the knee. The term is sometimes used to refer to the muscles in the back of the thigh. A pulled hamstring is a […]
- Hand, foot, and mouth disease
A common illness of infants and children under 10 years old characterized by fever, sores in the mouth, and a rash with blisters due to infection most commonly with coxsackievirus A16 or less often enterovirus 71 or another enterovirus. The disease begins with a mild fever, poor appetite, malaise (“feeling sick”), and frequently a sore […]
- Hand-arm vibration syndrome
A disorder resulting from prolonged exposure to vibration, specifically to the hands and forearms while using vibrating tools. Symptoms include numbness, tingling, and loss of nerve sensitivity. The hand-arm vibration syndrome (HAVS) is a painful and potentially disabling condition of the fingers, hands, and arms due to vibration. There is initially a tingling sensation with […]
- Hand-foot-and-mouth syndrome
coxsackievirus A16. In those outbreaks due to enterovirus 71, the illness may be more severe with complications such as viral meningitis and encephalitis and paralytic disease. However, hand-foot-and-mouth disease as a rule is, fortunately, mild and self-limited. The condition was first reported in 1956 in Australia and by the early 60s had emerged as a […]
- Hand-foot-and-mouth disease
most often Coxsackievirus A16, but also other coxsackieviruses and enterovirus 71. The incubation period is short, usually 4 to 6 days. The disease occurs most frequently in summer and fall. The illness is characteristically mild and self-limited. Also known as hand-foot-and-mouth syndrome and hand, foot, and mouth disease or syndrome.