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Diseases & conditions A-Z List

Diseases & Conditions A-Z List - «M»:

  1. Melanin Melanin
    Melanin is a natural substance that gives color (pigment) to hair, skin, and the iris of the eye. It is produced by cells in the skin called melanocytes. Melanin also helps protect the skin from the sun. Alternative Names Skin pigment ...
  2. Melanoma Melanoma
    Melanoma is the most dangerous type of skin cancer. It is the leading cause of death from skin disease. It involves cells called melanocytes, which produce a skin pigment called melanin. Melanin is responsible for skin and hair color. Melanoma can also involve the colored part of the eye. For inform...
  3. Melanoma of the eye Melanoma of the eye
    Melanoma of the eye is cancer that occurs in various parts of the eye. Causes Melanoma is a very aggressive type of cancer that can spread rapidly. Melanoma of the eye can affect several parts of the eye, including the: Choroid Ciliary body Conjunctiva Eyelid Iris Orbit The choroid layer is th...
  4. Melasma Melasma
    Melasma is a dark skin discoloration that appears on sun-exposed areas of the face. Causes Melasma is a very common skin disorder. Though it can affect anyone, young women with brownish skin tones are at greatest risk. Melasma is often associated with the female hormones estrogen and progesterone. ...
  5. Membranoproliferative GN Membranoproliferative GN
    Membranoproliferative glomerulonephritis is a kidney disorder that involves inflammation and changes in the microscopic structure of kidney cells. It leads to disrupted kidney function. Causes Glomerulonephritis is inflammation of the glomeruli, the inner structures of the kidney that help filter ...
  6. Membranous nephropathy Membranous nephropathy
    Membranous nephropathy is a kidney disorder which involves changes and inflammation of the structures inside the kidney that help filter waste and fluids. The inflammation leads to problems with kidney function. Causes Membranous nephropathy is caused by thickening of part of the glomerular basemen...
  7. Memory loss Memory loss
    Memory loss (amnesia) is unusual forgetfulness. It may refer to not being able to remember new events, not being able to recall one or more memories of the past, or both. Considerations The cause determines whether amnesia comes on slowly or suddenly, and whether it is temporary or permanent. Norma...
  8. Meniere’s disease Meniere’s disease
    Meniere's disease is an inner ear disorder that affects balance and hearing. See also: Vertigo Causes The inner ear has fluid-filled tubes called semicircular canals, or labyrinths. The canals, along with a nerve in your skull, help interpret your body's position and maintain your balance. Meniere...
  9. Meningitis Meningitis
    Meningitis is swelling and irritation (inflammation) of the membranes covering the brain and spinal cord. This inflammation causes changes in the cerebrospinal fluid (CSF) that surrounds the brain and spinal cord. See also: Aseptic meningitis Meningitis - gram-negative Meningitis - H. influenz...
  10. Meningitis - cryptococcal Meningitis - cryptococcal
    Cryptococcal meningitis is a fungal infection of the membranes covering the brain and spinal cord (meninges). See also: Aseptic meningitis Meningitis - gram-negative Meningitis - H. influenzae Meningitis - meningococcal Meningitis - pneumococcal Meningitis - staphylococcal Meningitis ...
  11. Meningitis - gram-negative Meningitis - gram-negative
    Gram-negative meningitis is an infection of the membranes covering the brain and spinal cord (meninges) caused by bacteria that turn pink when exposed to a special stain (gram-negative bacteria). See also: Aseptic meningitis Meningitis - cryptococcal Meningitis - H. influenzae Meningitis - ...
  12. Meningitis - H. influenzae Meningitis - H. influenzae
    Haemophilus influenzae meningitis is a bacterial infection of the membranes covering the brain and spinal cord (meninges). See also: Aseptic meningitis Meningitis Meningitis - cryptococcal Meningitis - gram-negative Meningitis - meningococcal Meningitis - pneumococcal Meningitis - sta...
  13. Meningitis - meningococcal Meningitis - meningococcal
    Meningococcal meningitis is an infection that causes swelling and irritation (inflammation) of the membranes covering the brain and spinal cord. See also: Aseptic meningitis Meningitis Meningitis - cryptococcal Meningitis - gram-negative Meningitis - H. influenzae Meningitis - pneumococ...
  14. Meningitis - pneumococcal Meningitis - pneumococcal
    Pneumococcal meningitis is a bacterial inflammation or infection of the membranes covering the brain and spinal cord. See also: Aseptic meningitis Meningitis Meningitis - cryptococcal Meningitis - gram-negative Meningitis - H. influenzae Meningitis - meningococcal Meningitis - staphylo...
  15. Meningitis - staphylococcal Meningitis - staphylococcal
    Staphylococcal meningitis is a bacterial infection of the membranes covering the brain and spinal cord (meninges). See also: Aseptic meningitis Meningitis - cryptococcal Meningitis - gram-negative Meningitis - H. influenzae Meningitis - meningococcal Meningitis - pneumococcal Meningit...