1 Eczema, or atopic dermatitis, is a rash that primarily occurs in people with asthma or allergies. The rash is often reddish and itchy with a scaly texture.  Psoriasis is a common skin condition that can cause a scaly, itchy, red rash to form along the scalp, elbows, and joints.
Although most bacteria are harmless or often beneficial, several are pathogenic. One of the bacterial diseases with the highest disease burden is tuberculosis, caused by the bacterium Mycobacterium tuberculosis, which kills about 2 million people a year, mostly in sub-Saharan Africa.ome pathogenic bacteria cause disease under certain conditions, such entry through the skin via a cut, through sexual activity or an compromised immune function.
In general bacteria that cause disease are called pathogenic bacteria. The ones that do not cause disease are often referred to as healthy bacteria or good bacteria See Re â¦ lated Links for a good discussion on types of bacteria.n general bacteria that cause disease are called pathogenic bacteria. The ones that do not cause disease are often referred to as healthy bacteria or good bacteria See Re â¦ lated Links for a good discussion on types of bacteria.