Atopic dermatitis (eczema) is an itchy inflammation of your skin. It's a long-lasting (chronic) condition that may be accompanied by asthma or hay fever. Eczema is most often seen in infants and children, but it can continue into adulthood or first appear later in life.
Eczema may affect any area, but it classically appears on your arms and behind the knees. It tends to flare periodically and then subside.
May be genetic, but is often allergy related, especially food allergies. It can also be exacerbated by an allergy to dust mites.
In many patients the triggers are unclear.
As it is common in infants and young children and is often considered the precursor to future asthma and allergic rhinitis.
While the signs of eczema may vary person-to-person, the most common symptoms include:
· Dry skin
· Red to brownish-gray patches, specially on the hands, feet, ankles, wrists, neck, eyelids, inside the bend of the elbows and knees and for infants on the face or scalp.
Urticaria, also known as hives are raised, red, itchy welts (wheals, or swellings) of various sizes that seem to appear and disappear on your skin.
In most cases, hives and angioedema are harmless and don't leave any lasting marks, even without treatment. The most common treatment for hives and angioedema is antihistamine medications. Serious angioedema can be life-threatening if swelling causes your throat or tongue to block your airway and leads to loss of consciousness.
Hives can be either acute or chronic.
Acute urticaria lasts less than a day to up to six weeks
Chronic urticaria last more than six weeks, sometimes occurring for months to years at a time. Mild hives usually aren't life-threatening. You can usually be treated at home.
The Causes of hives and urticaria may be difficult to determine, especially with chronic urticaria, where it can be up to 50% of the time.
Common Triggers, especially with acute urticaria are:
In addition to these triggers, hives sometimes occur in response to your body's production of antibodies. This may occur because of blood transfusions; immune system disorders, such as lupus or cancer; certain thyroid disorders; infections, such as hepatitis; or even a cold.