ILLNESSOPEDIA

Free Online Database Of Diseases, Illnesses & Ailments

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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 A


  1. Amylotrophic Lateral Sclerosis
    Amylotrophic lateral sclerosis is a progressive neurodegenerative disease that destroys the motor neurons causing paralysis and eventual death. In this condition the nerves associated with voluntary muscle control degenerate and results to atrophy of the muscles. Most patients become bound to a wheelchair and soon die due to other complications. [read more]

  2. Amyoplasia Congenita
    Amyoplasia congenita is a birth disorder characterized by stiffness of the joints and muscle and nerve wastage that causes severe impairment and eventual immobility of the arms and legs. [read more]

  3. Amyotrophic Lateral Sclerosis
    abbreviated ALS; is a disorder of the nerve cells in the brain and spinal cord that are in charge for voluntary muscle movement. It is a crucial neurological disease that harms the nerve cells that control voluntary muscles. [read more]

  4. Anal Cancer
    Anal cancer is a type of cancer which arises from the anus, the distal orifice of the gastrointestinal tract. [read more]

  5. Anal Exudates
    Anal exudates are wastes, either in fluid or semi-solid form, which are released by the anus. They also referred to as feces. [read more]

  6. Anal Fissure
    An anal fissure is a small tear in the lining of the anal canal. Frequently in infants' ages 6 to 24 months, anal fissures are less likely to develop in older children. Adults may generate anal fissures as a result of passing hard or large stools during bowel movements. [read more]

  7. Anal Itching
    Anal itching is characterized by an intense itching felt around the anus causing extreme discomfort. This medical condition is also called pruritus ani and can be caused by a number of irritants such as abrasion of the clothing, moisture or even pressure in sitting. [read more]

  8. Anaphylactic Shock
    Anaphylactic Shock is also called Anaphylaxis. It is a life-threatening type of allergic reaction in humans and other mammals. It occurs when an allergic response triggers a rapid release from mast cells of huge quantities of immunological mediators leading to systemic vasodilation and edema of bronchial mucosa. Anaphylactic shock can advance to death in a count of minutes if left untreated. Anaphylactic Shock may occur after ingestion, injection of an allergen, skin contact or, in rare cases, inhalation. [read more]

  9. Anaphylactoid Purpura
    Anaphylactoid Purpura otherswise known as the Henoch-Schonlein purpura or HSP is a medical condition that refers to the inflammation of the blood vessels or the vasculitis. [read more]

  10. Anaphylaxis
    Anaphylaxis, from the Greek words “ava ana” (against) and “phylaxis” (protection), is a severe type I hypersensitivity and acute systemic allergic reaction in mammals, including humans. This condition occurs when an animal or person is exposed to an allergen that has already become sensitized. Large amounts of this allergen may cause a life-threatening reaction. Anaphylaxis occurs after injection, ingestion and inhalation of an allergen. In the United States, 1% to 17% of the population is estimated at risk for experiencing an anaphylactic reaction if exposed in various allergens, especially insect stings and penicillin. Of those who suffer from Anaphylaxis, 1% die as a result, accounting to 1,000 deaths per year in the United States. [read more]

  11. Anaplastic thyroid cancer
    Anaplastic thyroid cancer is a type of thyroid cancer that has an extremely poor prognosis with only 14% survival rate. This disease is known for its aggressive behavior and fatal resistance to available cancer treatments. Anaplastic thyroid cancer quickly invades surrounding tissues. [read more]

  12. Anasarca
    Anasarca, also called Swelling is the enlargement of skin, organs or other body parts. It is caused by build up of liquid in the tissues. The extra fluid can advance to a quick upsurge in weight over a short period of time. Anasarca can occur throughout the body or only in a definite part of the body. [read more]

  13. Androgen insensitivity syndrome (AIS)
    Androgen insensitivity syndrome (AIS) is also called Androgen resistance syndrome. Androgen insensitivity syndrome is a condition wherein patients suffer from a set of disorders related to sexual differentiation, which results in mutation of the genes encoding the androgen receptor. The nature of problems caused by Androgen insensitivity syndrome varies largely according to the sensitivity and structure of abnormal receptor. Almost all types of Androgen insensitivity syndrome involve infertility and undervirilization in persons of both genders. Women with complete Androgen insensitivity syndrome have female appearance even if they have an undescended testes and 46XY karyotype. [read more]

  14. Anemia
    Anemia comes from the Greek words “an-hama”, which means “without blood”. Anemia is the most widespread blood disorder. This condition is a deficiency of RBCs (red blood cells) or hemoglobin, the molecules inside RBCs. When hemoglobin carries oxygen from the lungs into tissues, anemia causes lack of oxygen in organs. When this happens, different clinical consequences may occur due to oxygen deficiency. There are three classes of anemia – excessive blood loss, excessive blood cell destruction and deficient production of red blood cells. Anemia has several types, which are produced by various underlying causes. This disease can be classified using different ways, normally based on discernible clinical spectra, the morphology of red blood cells and etiologic mechanisms. [read more]

  15. Anemia, Diamond-Blackfan
    Diamond-Blackfan anemia is a congenital erythroid aplasia, which is commonly present in infants. Patients with Diamond-Blackfan anemia have anemia (or low red blood cell counts). However, the remaining blood cells, such as white blood cells and platelets, have normal counts. Various congenital abnormalities may also occur with Diamond-Blackfan anemia patients. [read more]

  16. Anemia, Pernicious
    Pernicious anemia, also called “Addisson's anemia” or “Biermer's anaemia”, is a type of megalobastic anemia caused by vitamin B12 deficiency. This condition is the most common cause of vitamin B12 deficiency in adults. [read more]

  17. Anemia, Sideroblastic
    Sideroblastic anemia is a condition caused by the abnormal production of red blood cells, normally as a part of myelodysplastic syndrome that can evolve into hematological malignancies, such as acute myelogenous leukemia. When this happens, the patient's body will have iron, but it cannot incorporate this into the hemoglobin. [read more]

  18. Anencephaly
    Anencephaly is a cephalic disorder resulting from a neural tube defect, which occurs when the head of the neural tube does not close. It usually occurs around the 23rd to 26th day of pregnancy. This condition results in the absence of a large portion of the scalp, skull and brain. Infants with Anencephaly are born with no forebrain, the part of the brain where the cerebral hemispheres should be present. The brain tissues that exist are often uncovered by skin or bone. Infants born with Anencephaly are usually deaf, blind, unconscious and inability to feel pain. This is because the cerebral hemispheres affected by this condition are responsible for higher level of cognition, such as thinking. In the United States, 1,000 to 2,000 babies are born with Anencephaly every year. Female babies are more likely to be affected by Anencephaly. Unfortunately, the cause of Anencephaly is unknown. [read more]

  19. Aneurysm
    An aneurysm is a localized, balloon-like, blood-filled dilation of any blood vessel, which is caused by a disease or weakening of the vessel wall. An aneurysm usually occurs in arteries located in the brain and in the aorta (heart). The bulge in blood vessels could burst, which could lead to death any time. However, the larger aneurysm becomes, the larger chances it is to burst. [read more]

  20. Aneurysm of sinus of Valsalva
    Aneurysm of sinus Valsalva, also known as “aneurysm of the aortic sinus” is a rare disorder, affecting only one person in 1,000 people. For people with Aneurysm of sinus Valsalva, it usually occurs in the right sinus, rarely in the left. Aneurysm of sinus Valsalva is a congenital disease and may possibly be associated with heart defects. This condition is sometimes associated with Loeys-Dietz syndrome and Marfan Syndrome. It could also result from syphilis, chest injuries, atherosclerosis, Ehlers-Danlos syndrome, infective endocarditis and cystic medial necrosis. When Aneurysm of sinus Valsalva is unruptured, it can be asymptomatic. As such, the condition may go undetected until symptoms become apparent or medical imaging is performed. [read more]



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