Organ: Immune system


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Immune system: The body's system for protecting itself from viruses and bacteria or any "foreign" substances. 1
Introduction: The immune system protects the body against invading microbes such as bacteria, viruses and parasites. Some of the general front-line immune defences are the skin and various membranes, but a variety of internal organs and cells provide very specific defences. Organs involved in this process include white blood cells (T-cells and B-cells), thymus (matures T-cells), bone marrow (produces WBCs), tonsils (protect the throat), lymph nodes, and the spleen. Other defensive body processes include stomach acid, various cleaning secretions (e.g. tears, saliva, vaginal secretions, etc.), nasal hairs, mucus in the throat and respiratory system, and cilia in the mucus.

Although the immune system usually prevents disease, sometimes it can cause it. There are several diseases caused by an overactive immune system such as allergies, asthma, autoimmune diseases (more than 100), and hay fever.

Parts of the immune system can become diseased. Failure of the entire immune system is immune deficiency such as in AIDS and primary immune deficiency (such as SCID). Cancer can afflict immune system cells: leukemia is cancer of blood cells (usually white blood cells), multiple myeloma is cancer of plasma cells (a type of B-cell), and lymphoma is cancer of the lymph nodes; also possible is thymus cancer. The solid organs such as the tonsils and spleen can become infected like any other organ (e.g. tonsilitis, splenomegaly).


Introduction: immune system a complex network of specialized cells, tissues, and organs that defends the body against attacks by disease-causing microbes. 2
Condition count: 144 ; see list below.
Organ subtypes: skin (90), white blood cells (5), thymus gland (3), bone marrow (9), tonsils (7), spleen (3), lymph nodes (9), macrophages (0)
Main condition: Immune disorders
Organs: all organs

Diseases list: The following list of medical conditions have 'Immune system' or similar listed as an affected body part in our database:

A

  • Acne ... skin
  • Actinic keratosis ... skin
  • Adult T-cell leukemia/lymphoma ... white blood cells, bone marrow, immune
  • Albinism ... skin
  • Allergic Disorders ... immune
  • Allergic rhinitis ... immune system
  • Allergies ... immune system, skin
  • Alopecia Areata ... skin
  • Anaphylaxis ... immune system
  • Anthrax ... skin
  • Aplastic anemia ... bone marrow
  • Autoimmune diseases ... immune system
  • Autoimmune Lymphoproliferative Syndrome ... immune
  • Autoimmune Myelopathy ... bone marrow
  • Autoimmune neuropathies ... immune
  • Autoimmune Urticaria ... skin

    B

  • Barber's rash ... skin
  • Behcet's Disease ... skin
  • Blue veins ... skin
  • Boil ... skin
  • Bone Marrow Conditions ... bone marrow
  • Bullous Pemphigoid ... skin
  • Burns ... skin

    C

  • Callus ... skin
  • Candidiasis ... skin
  • Carbuncle ... skin
  • Carotenemia ... skin
  • Cellulitis ... skin
  • Chediak-Higashi Syndrome ... immune system
  • Chilblain ... skin
  • Chronic tonsilitis ... tonsils
  • Cold sores ... skin
  • Common Variable Immunodeficiency ... white blood cells, immune system
  • Contact dermatitis ... skin
  • Corns ... skin
  • Cradle Cap ... skin, scalp
  • Cutaneous Anthrax ... skin
  • Cutaneous diphtheria ... skin
  • Cutaneous mastocytosis ... skin

    D

  • Dandruff ... scalp
  • Dermatitis ... skin
  • Dermatitis herpetiformis ... skin
  • Dermoid cyst ... skin
  • DiGeorge's syndrome ... immune system, thymus
  • Diphtheria ... tonsils
  • Discoid lupus erythematosus ... skin
  • Drug Allergies ... immune system
  • Dry skin ... skin

    E

  • Eczema ... skin
  • Elephantiasis ... skin
  • Erythema ... skin
  • Erythema multiforme ... skin
  • Erythema nodosum ... skin
  • Erythrasma ... skin
  • Erythroderma ... skin
  • Erythromelalgia ... skin
  • Exfoliative dermatitis ... skin

    F

  • Food allergies ... immune system

    G

  • Gaucher Disease ... spleen, bone marrow
  • Genital warts ... skin
  • Granuloma annulare ... skin

    H

  • Hay fever ... immune system
  • Herpes ... skin
  • Hives ... immune system, skin
  • Hodgkin's Disease ... lymph nodes, immune
  • HTLV ... immune system
  • HTLV-1 ... immune system
  • Human Papillomavirus ... skin
  • Hyper-IgE Syndrome ... immune system
  • Hyper-IgM Syndrome ... immune system

    I

  • Ichthyosis ... skin
  • Immune deficiency conditions ... immune system
  • Immune disorders ... immune system
  • Impetigo ... skin
  • Incontinentia Pigmenti ... skin
  • Insect sting allergies ... immune system
  • Intertrigo ... skin

    J

  • Jaundice ... skin

    K

  • Kaposi's Sarcoma ... skin
  • Keratosis ... skin

    L

  • Latex allergies ... immune system
  • Leukemia ... white blood cells, bone marrow, immune
  • Leukocyte Adhesion Defect ... immune system
  • Lichen planus ... skin
  • Lichen sclerosis ... skin
  • Lipoma ... skin
  • Lymphadenitis ... lymph nodes, immune
  • Lymphatic Filariasis ... lymph nodes, immune
  • Lymphedema ... lymph nodes
  • Lymphoma ... lymph nodes, immune

    M

  • McCune-Albright Syndrome ... skin
  • Melanoma ... skin
  • Moles ... skin
  • Molluscum contagiosum ... skin
  • Multiple Myeloma ... white blood cells, bone marrow, immune
  • Mycosis fungoides ... skin, lymph nodes
  • Myelodysplastic syndromes ... bone marrow

    N

  • Necrotizing fasciitis ... skin
  • Neurodermatitis ... skin
  • Neurofibromatosis-1 ... skin
  • Non-Hodgkin's Lymphoma ... lymph nodes, immune

    O

  • Open Wound ... skin
  • Osteomyelitis ... bone marrow

    P

  • Peanut allergies ... immune system
  • Pemphigus ... skin
  • Pemphigus Foliaceus ... skin
  • Pemphigus Vulgaris ... skin
  • Penicillin allergy ... immune system
  • Pharyngitis ... tonsils
  • Photosensitivity ... skin
  • POEMS ... immune
  • Porphyria ... skin
  • Possibly Autoimmune Diseases ... immune system
  • Primary Immune Deficiency ... immune system
  • Psoriasis ... skin

    R

  • Reflex sympathetic dystrophy syndrome ... skin
  • Respiratory diphtheria ... tonsils
  • Rhinophyma ... skin
  • Rosacea ... skin

    S

  • Sarcoidosis ... spleen, skin, lymph nodes
  • Scabies ... skin
  • SCID ... immune system
  • Sclerodactyly ... skin
  • Scleroderma ... skin
  • Sebaceous cyst ... skin
  • Seborrheic keratosis ... skin
  • Selective IgA Deficiency ... immune system
  • Skin allergies ... immune system, skin
  • Skin Cancer ... skin
  • Skin conditions ... skin
  • Skin rash ... skin
  • Spleen conditions ... spleen
  • Sporotrichosis ... skin, lymph nodes
  • Stevens-Johnson Syndrome ... skin

    T

  • Thymus Cancer ... immune, thymus
  • Thymus disorders ... thymus
  • Tinea ... skin
  • Tonsil cancer ... tonsils
  • Tonsil disorders ... tonsils
  • Tonsilitis ... tonsils

    U

  • Urticaria ... skin

    V

  • Vitiligo ... skin

    W

  • Warts ... skin

    X

  • X-Linked Agammaglobulinemia ... white blood cells, immune system

    Footnotes:
    1. excerpt from Kidney Failure Glossary: NIDDK
    2. excerpt from Microbes in Sickness and in Health - Publications, National Institute of Allergy and Infectious Diseases: NIAID

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