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  • Diseases & Conditions

    Hypertropia

    Hypertropia is a type of eye misalignment in which one eye appears higher than the other. The eyes may not work together…

  • Diseases & Conditions

    Hypervitaminosis A

    Hypervitaminosis A is a condition caused by having too much vitamin A in the body. It can happen suddenly after a very…

  • Diseases & Conditions

    Hypodontia

    Hypodontia is a developmental condition in which one or more permanent teeth do not form. The missing teeth are present from birth…

  • Diseases & Conditions

    Hypokalemia

    Hypokalemia is the medical term for a potassium level in the blood that is lower than the body needs. Potassium helps muscle…

  • Diseases & Conditions

    Hyponatremia

    Hyponatremia is a lower-than-normal concentration of sodium in the blood. Sodium helps control the balance of water in and around cells and…

  • Diseases & Conditions

    Hypopituitarism

    Hypopituitarism occurs when the pituitary gland produces too little of one or more important hormones. The pituitary is a small gland at…

  • Diseases & Conditions

    Hypospadias

    Hypospadias is a congenital difference in which the opening of the urethra is not at the usual tip of the penis. It…

  • Diseases & Conditions

    Hypothyroidism

    Hypothyroidism is an underactive thyroid that does not produce enough thyroid hormone. This hormone helps regulate metabolism, which affects how the body…