Nikki A. Levin, MD, PhD, is an Assistant Professor of Medicine, Division of Dermatology, University of Massachusetts Medical School, Worcester, MA. Note: The author reported no actual or potential ...

A circular rash is commonly caused by a fungal infection called ringworm ... Tinea versicolor is a fungal skin infection by the Malassezia species. It causes scaly, circular patches typically on the ...

although Malassezia furfur is responsible for a small number of cases. These yeasts are normally found on the human skin and become troublesome only under certain conditions, such as a warm and humid ...

The rash can also spread to other parts of the body ... These include an increased production of sebum (skin oil) and the usually harmless growth of a certain type of yeast (Malassezia furfur) on the ...

All species of Malassezia except M. pachydermatis, a zoophilic species, require skin lipids for growth, because they do not synthesize long-chain saturated fatty acids. Due to this lipid ...

A chemical irritant in the plant’s berries, leaves and stems, tricks the human immune system into attacking skin cells causing rashes and itching. Burning the plant can cause smoke that gets ...

Pityriasis rosea is a common, self-limiting rash that starts with a single patch and typically affects healthy adolescents and young adults. Its itchy round lesions can look similar to ringworm (tinea ...