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Doctor insights on: Hypersensitive

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What are the symptoms of hypersensitivity to onions?

What are the symptoms of hypersensitivity to onions?

Typical symptoms: Regardless of the food triggering an allergic reaction the allergic reaction consists of some or all of these symptoms: itchy & swollen of lips, tongue, mouth, throat, nausea, vomiting, cramps, diarrhea, hives, swollen face, eyelids, coughing, wheezing, shortness of breath, a sense of doom, dizziness, loss of consciousness. ...Read more

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What are the common types of hypersensitivity reactions?

What are the common types of hypersensitivity reactions?

Many possibilities: The word "hypersensitivity" often is used to describe an allergic reaction. Possible causes of allergic reactions are sensitivities to foods, insects, medications, etc... ...Read more

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What is the difference between type I hypersensitivity and type ii?

What is the difference between type I hypersensitivity and type ii?

Big difference: Type 1 is mediated by the IgE antibody and responsible for anaphylaxis, hay fever, allerg etc. Allergy skin test can identify these. Type 2 is mediated by IgG or IgM antibody and complement proteins that are "cytotoxic" that ends up killing the target cell. Examples of this are hemolytic anemia, Graves disease, Myasthenia gravis, Rheumatic heart disease, etc. For anemia, a Coombs test is used ...Read more

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Help please? What is the difference between type i hypersensitivity to type ii?

Help please? What is the difference between type i hypersensitivity to type ii?

Type I is immediate: hypersensitivity reactions, involves IgE with histamine and other mediators release from mast cells, while type II is cytotoxic hypersensitivity reactions involving IgG or IgM bound to cell surface antigens, with subsequent complement (a protein in the blood) fixation, there are also type III and type IV reactions, type I reactions are responsible for immediate allergic symptoms to foods or drugs ...Read more

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Hypersensitive to noise. What can I do?

Hypersensitive to noise. What can I do?

Not an allergy: Consult an ENT surgeon to find out if there is anything wrong with your hearing or ears and follow his/her advice. Until you have been examined, you may use ear protectants. ...Read more

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How do you treat hypersensitivity to sound?

How do you treat hypersensitivity to sound?

Sound hypersentivity: Too broad question. Cause of sensitivity? Treat the cause! trauma psychological or physical can trigger hyper response to stimuli , even though sound might not have been part of the trauma. Part of hyperarousal, state of hyper stimulation, easily startled...Treat the cause. If cause not found or not remembered (child trauma-abuses), specialists can still help find cause by different modalities. ...Read more

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What is a type 4 hypersensitivity reaction?

What is a type 4 hypersensitivity reaction?

Delayed reaction: Type 4 reactions are delayed reactions involving t cells (i.e. Poison ivy). ...Read more

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What is cytotoxic hypersensitivity (type 2)?

What is cytotoxic hypersensitivity (type 2)?

Type II hypersensitivity: Or cytotoxic reactions, are antibody dependent, IgG or IgM binds to the own body cell surface after being altered by a protein, so the immune system recognizes as non-self (foreign) attacks and destroys the cell by fixing a protein called complement, which in turn forms the Membrane Attack Complex and destroy the cell, the most famous is hemolytic anemias and some auto immune diseases ...Read more