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what is the difference between a rash and hives

A 55-year-old member asked:
Dr. Robert Jackson
42 years experience Dermatology
blisters: With poison ivy you have blisters.

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A 59-year-old female asked:
Dr. Lynne Weixel
35 years experience Clinical Psychology
Immune system alert: For some reason (often it is mysterious even with best efforts to identify the agent) some people's immune systems go into an emergency alert mode and ... Read More
A 56-year-old member asked:
Dr. Payam Rafat
21 years experience Podiatry
Many possibilities: There are many types and causes of skin rashes. Several types of inflammatory conditions of the skin, allergic reactions, and sometimes bacterial, vi ... Read More
A 37-year-old member asked:
Dr. Al Hegab
Dr. Al Hegab answered
39 years experience Allergy and Immunology
See an allergist: chronic hives, or urticaria needs evaluation, check aaaai.org or acaai.org for an allergist in your area, good luck
A 40-year-old member asked:
Dr. Morris Westfried
45 years experience Dermatology
Pustules: Rosacea is on the face has blood vessels redness and posible pustules, typically there is no scaling or dryness.
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A 52-year-old member asked:
Dr. Alfredo Garcia
55 years experience Pediatrics
Rash: Both allergy and herpes can cause a rash. How to tell one from the other is not within the scope of this social medium. So if you are suffering from a ... Read More
A 54-year-old member asked:
Dr. Otto Placik
33 years experience Plastic Surgery
Big difference: Rosacea tends to be a reactive process in response to various stimulants that may eventually produce long term skin changes such as rhinophyma that ar ... Read More
A 45-year-old member asked:
Dr. Steven Machtinger
43 years experience Allergy and Immunology
Hives last < 1 day: Hives & insect bites itch but otherwise are very different. Bites last for days. A hive fades away in hours although it may be replaced by other hives ... Read More
A 53-year-old female asked:
Dr. Michael Kelber
25 years experience Family Medicine
Both signs of allerg: Dermatographism is the welting up of skin when it is stroked with a dull object such as a fingernail. The welt will be exactly the same pattern as wha ... Read More
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A 46-year-old member asked:
Dr. Candace Spann
20 years experience Dermatology
Caused by heat: Heat rash is caused by heat. It has a variety of presentations, most common being red bumps with small vesicles that are easily ruptured. Contact derm ... Read More
A 30-year-old member asked:
Dr. Michael Klein
20 years experience Family Medicine
Wart is type of rash: A rash is a description for any abnormality of the skin which causes changes in skin color, texture, appearance, thickness, etc. A wart is a type of ... Read More
A 28-year-old female asked:
Dr. Michael Zacharisen
32 years experience Allergy and Immunology
Similar : Pruritus means itching (and not necessarily a rash) while urticaria refers to an itchy rash that is raised, red, round to oval lesions that come and g ... Read More
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A 53-year-old female asked:
Dr. Al Hegab
Dr. Al Hegab answered
39 years experience Allergy and Immunology
Diaper rash: is a generic term, can include allergic reaction (allergic contact dermatitis) to the diaper material, rare, most commonly is a fungal infection to th ... Read More
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A 60-year-old female asked:
Dr. Michael Zacharisen
32 years experience Allergy and Immunology
Overlapping symptoms: There are overlapping symptoms between the common viral cold, sinus infections and allergic rhinitis (allergies) for an easy to use chart, go to my bl ... Read More
A 50-year-old member asked:
Dr. Bruce Rothschild
47 years experience Rheumatology
see below: A nasal redness, enlargement and roughening, often attributed to alcohol ingestion is quite different from lupus rashes. They typically affect the mal ... Read More
A 51-year-old member asked:
Dr. Ryan Phasouk
17 years experience Family Medicine
Infection vs reactio: Impetigo is a bacterial infection treated with antibiotics. Poison ivy is the bodys own immune response to oils/resins of a plant that are treated wi ... Read More
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A 46-year-old member asked:
Dr. James Ferguson
45 years experience Pediatrics
Insect vs fungus: Bedbugs are small blood sucking insects that like to feed at night & may leave multiple inflamed bite wounds on your body where they fed. Ringworm occ ... Read More
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A 27-year-old female asked:
Dr. Duane Gels
36 years experience Allergy and Immunology
Can look similar: To patients, both are dry, flaky rashes that can appear at any age. Psoriasis is more specific, and can involve arthritis. Eczema can simply over dry ... Read More
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A 44-year-old member asked:
Dr. Thomas Klein
40 years experience Allergy and Immunology
Many: An allergic reaction is due to an immunoglobulin called ige and involves histamine and other mediators or chemicals produced in the body. Acne is a ... Read More
A 44-year-old member asked:
Dr. Joseph Eastern
43 years experience Dermatology
Few similarities.: Roseola is a viral infection affecting infants and young children. It involves a pinkish-red skin rash and a high fever that typically starts as the r ... Read More
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A 43-year-old member asked:
Dr. Alfredo Garcia
55 years experience Pediatrics
Dermatitis or tinea: Dermatitis is a genral term for any skin rash. It can be fungal like tinea, bacterial, viral, atopic (eczema), chemical burn, friction burn, or a simp ... Read More
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A 42-year-old member asked:
Dr. Michael P Vaughn
33 years experience Allergy and Immunology
Yes: Urticaria, "hives" are itchy, raised red bumps that typically move around from one skin site to another and last less than 24hrs in one location (hive ... Read More
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A male asked:
Dr. Heidi Fowler
24 years experience Psychiatry
Cold vs flu: Flu symptoms may include: muscle aches ; pains, a fever above 100 degrees, headache, congestion, weakness, chills, increased sweating and coughing. ... Read More
A 64-year-old member asked:
Dr. Colin Kerr
43 years experience Family Medicine
Hay fever vs cold: From a practical perspective, the symptoms of both of these disorders are the same--runny nose and sneezing, perhaps also with itching, running eyes. ... Read More
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90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

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Personalized answers
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