Common symptoms, how long it lasts and the options for getting rid of it Heat rash, or prickly heat, is a largely harmless but uncomfortable condition that happens when sweat glands become blocked.
The condition is common in babies and children. Contact dermatitis causes itchy, scaly, or raw skin. Redness and other color changes may occur. It appears hours to days after contact with an allergen.
A neck rash, or dermatitis, is skin inflammation ... dermatitis is the most common form of eczema, affecting over 26 million people in the United States, including children and adults.