Free Online Database Of Diseases, Illnesses & Ailments


Here you can look through thousands of and diseases, ailments, medical conditions and illnesses. You can find the symptoms. Read about any ailment's diagnosis and find medications that can be used and the correct treatments that are needed.

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Diseases, Illnesses & Ailments Starting from Letter H

  1. Holocarboxylase synthetase deficiency
    Holocarboxylase synthetase deficiency is an inherited disorder in which the body is unable to utilize the vitamin biotin effectively. This disorder is classified as a multiple carboxylase deficiency, a group of disorders marked by impaired activity of certain enzymes that depend on biotin. [read more]

  2. Holoprosencephaly
    Holoprosencephaly is a disorder caused by the failure of the prosencephalon (the embryonic forebrain) to adequately divide into the double lobes of the cerebral hemispheres. This results in a single-lobed brain structure and severe skull and facial defects. In majority of cases of holoprosencephaly, the malformations are so severe that babies die before birth. In less severe cases, babies are born with normal or near-normal brain development and facial deformities that may affect the noce, eyes, and upper lip. [read more]

  3. Holt-Oram syndrome
    Holt-Oram syndrome is a disorder that affects bones in the arms and hands and may also cause heart problems in patients. [read more]

  4. Homocystinuria
    Homocystinuria is an inherited disorder in which the body cannot process certain building blocks of proteins (amino acids) properly. [read more]

  5. Hookworm
    The hookworm is a parasitic nematode worm that lives in the small intestine of its host, which may be a mammal such as a dog, cat, or human. There are two species of hookworms commonly infect humans, Ancylostoma duodenale and Necator americanus. [read more]

  6. Hordelum
    A sty (hordeolum) is a red, painful lump on the edge or inside of the eyelid that may look like a boil or a pimple. Often a sty is filled with pus. As it swells in size, the sty may make it difficult for the person to see clearly because he can't fully open his eye. [read more]

  7. Horn Kolb syndrome
    Horn Kolb syndrome, also known as acheiropodia, is an autosomal recessive disease that results in hemimelia, a lack of formation of the distal extremities. This is a congenital defect which is made up of bilateral amputations of the distal upper and lower extremities, as well as aplasia of the hands and feet. It is almost endemic to Brazil. [read more]

  8. Horner's syndrome
    Horner's syndrome is a clinical syndrome resulting from damage to the sympathetic nervous system. It is also known as Bernard-Horner syndrome or oculosympathetic palsy. [read more]

  9. Horseshoe kidney
    Horseshoe kidney (also called renal fusion) is a congenital disorder, affecting about 1 in 400 people, in which a person's two kidneys fuse together to form a horseshoe-shape during development in the womb. [read more]

  10. Hot Flashes
    Hot flashes, or hot flushes, are the sudden passing of warm feelings from the face going down to the other parts of the body, including the hands and feet. This is commonly experience by women undergoing menstruation, pre-natal situations and menopause. [read more]

  11. Hot Tub Rash
    Hot tub rash, with other common names like barber's itch, folliculitis, or hot tub folliculitis may sound more like a bad joke than a skin disorder, but an infection of the hair follicles is not a laughing matter. Scarring and permanent hair loss might be the result in severe cases and even mild folliculitis can be embarrassing and uncomfortable. [read more]

  12. Howel-Evans syndrome
    Howel-Evans syndrome is a very rare condition in which the skin of the palms of the hands, and soles of the feet, are affected (hyperkeratosis). The effects on the palms and soles is called tylosis, and in Howel-Evans syndrome, there is a high risk for oesophageal cancer, particularly squamous cell carcinoma. [read more]

  13. HPV Infection
    HPV infection is a condition contracted from one of a group of more than 100 related human papillomaviruses (or HPVs). [read more]

  14. HSV-2 infection
    HSV1 (HHV1) and HSV2 (HHV2) are neurotrophic alpha-herpesviruses that occur naturally only in humans. [read more]

  15. Hughes Syndrome
    Hughes syndrome is the former name of antiphospholipid syndrome. It is a kind of coagulation disorder in which the blood clots both in the arteries and veins. This disorder can led to pregnancy-related problems such as preterm deliver, miscarriage and severe preeclampsia. [read more]

  16. Human Adjuvant Disease
    Human adjuvant disease is a connective-tissue disease that may develop after a person undergoes cosmetic surgery. Mammary augmentation procedures may lead to systemic lupus erythematosus and chylous effusion disorders especially when one is inserted with silicone gel implants. [read more]

  17. Human granulocytic ehrlichiosis
    Human Granulocytic Ehrlichiosis (HGE) is a rare infectious disease that is part of a group of diseases known as the Human Ehrlichioses. The Ehrlichioses are infectious diseases caused by bacteria in the "Ehrlichia" group. Several forms of Human Ehrlichial infection have been described including Human Granulocytic Ehrlichiosis (HGE), Sennetsu Fever, and Human Monocytic Ehrlichiosis (HME). Though caused by different strains of Ehrlichia bacteria, the disorders are all marked by similar symptoms. [read more]

  18. Human Head Lice
    These are parasitic insects that are tiny and wingless that resides and feed on blood from the scalp. Head lice are a very common problem that affects children and can be a major nuisance in the household. [read more]

  19. Human Immunodeficiency Virus
    Human immunodeficiency virus (HIV) is a retrovirus that can result to acquired immunodeficiency syndrome (AIDS), a condition in humans in which the immune system begins to fail, leading to life-threatening opportunistic infections. [read more]

  20. Human Papillomavirus Infection
    HPV infection is a condition contracted from one of a group of more than 100 related human papillomaviruses (or HPVs). [read more]

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