Can hives look like lines?
Just as they vary in color, hives come in many shapes. Some appear as tiny spots or blotches. Others look like thin, raised lines. Hives also show up on the skin in many sizes.
What rashes form lines?
Lichen striatus (LY kuhn stry AY tuhs) is a rash that appears as pink or lightly-colored, scaly, flat bumps. Over the following weeks, these bumps come together to form a line or band on the skin. Sometimes the rash can appear inflamed or redder, with a thicker scale.
Is dermatographia an autoimmune disorder?
The exact cause of dermatographia is unknown. However, it appears to be an autoimmune disease in nature because autoantibodies to certain skin proteins have been found in some patients. Dermatographia can be linked to the inappropriate release of the chemical histamines.
Can hives be in a straight line?
The rash is usually seen in a straight line (linear) pattern. This is usually a sign of a person with sensitive skin. Swelling of the eyes, mouth, hands, feet, or genitals can sometimes occur with hives.
Is dermatographia caused by stress?
Another form of stress hives, known as dermatographia, can occur in people who pick or scratch their skin during times of stress. This constant external stimulus – pressure and friction on the skin – can cause an erroneous histamine release, which creates welts or hives.
What does it mean when your skin is red and swollen?
Cellulitis, a bacterial infection of the skin, causes red, tender skin that is usually swollen and warm. An ingrown toenail, when the side of the toenail grows into the skin, causes toe redness, pain, and swelling. Redness, swelling, pain, itching, bumps are common symptoms of insect bites.
What causes internal and external swelling in the body?
It’s typically the result of inflammation or a buildup of fluid. Swelling can occur internally, or it can affect your outer skin and muscles. A range of conditions can cause swelling. Insect bites, illnesses, or injuries often result in external swelling. Internal swelling is often a side effect of a medication or the result of a serious injury.
What does it mean when you have widespread swelling?
Widespread swelling occurs over a large area of the body. This is usually a sign of serious illness. It’s often due to fluid retention or an allergic reaction. Other common causes of widespread swelling include:
What does it mean when your body swells up after a sting?
A person who has been stung by an insect may experience swelling only in the area of the sting. Widespread swelling occurs over a large area of the body. This is usually a sign of serious illness. It’s often due to fluid retention or an allergic reaction. Other common causes of widespread swelling include: