- Defined as hives lasting less than 6 weeks.
It is estimated to affect 15-25% of the
population at least once in their life.
- Possible causes include:
- Medication reaction (Penicillin, Sulfa,
or other antibiotics) (Motrin, Ibuprofen,
- Fixed food allergies (nuts, chocolate,
fish, eggs, berries, tomatoes, milk)
- Latex exposure
- Insect sting
- Allergies to pollens or chemicals
- Treatment involves identifying and avoiding
the obvious triggers and possible adding
nonsedating antihistamines such as over the
counter Zyrtec, Xyzal, Allegra, or Claritin.
- Defined as hives lasting more than 6 weeks
and 70% of the time no cause can be found.
- Identifiable causes include:
- Autoimmune diseases such as thyroiditis,
Rheumatic diseases such as Lupus or
- Infectious causes such as Hepatitis B&C,
Mononucleosis, or bacterial infections of
the sinuses, teeth, etc.
- Physical causes such as cold exposure,
stress, exercise, water exposure, sunlight
exposure, and pressure applied to the skin.
- Inflammation of the vessels in the skin
caused by medications (ACE inhibitors,
Penicillin's, Sulfamides, Thiazides,
- Work up includes blood tests and allergy
- Treatment includes:
- Possible food avoidance
- Non- sedating antihistamine in the
morning (may increase the dose if necessary)
- May add Benadryl at night if needed
- May add histamine blocker such as over
the counter Zantac
- May add Singulair
- May add oral steroids