Persistent Skin Condition May Require Fungal retest, Experts Advise
LOS ANGELES, CA - A reader’s two-month struggle with an unexplained, localized skin condition-affecting areas of hair growth and unresponsive to common treatments-highlights the challenges in diagnosing dermatological issues, according to medical experts at UCLA. The case, detailed in a recent “Ask the Doctors” column, underscores the importance of considering less common causes and pursuing thorough retesting when initial investigations are inconclusive.
Dermatitis, characterized by skin thickening and potential blistering, can stem from a variety of sources including eczema, psoriasis, and allergic reactions. While treatments like clobetasol, UV light therapy, and antihistamines are frequently enough effective, their failure to provide relief after a notable period warrants a broader diagnostic approach. The UCLA doctors emphasize that a negative skin biopsy doesn’t always rule out potential causes, notably fungal infections like ringworm.
The patient’s symptoms, localized to areas of hair growth, prompted the experts to suggest exploring scalp-based fungal infections such as dandruff or folliculitis. They recommend an initial trial of antifungal shampoo, potentially leading to topical or oral antifungal medications if relief is found. Crucially, they note that standard ringworm tests can yield false negatives and advocate for a retest utilizing a polymerase chain reaction (PCR) test, capable of detecting fungal DNA.
the column also advises seeking a second opinion from a physician with potentially wider experience in similar conditions. Readers with questions are encouraged to contact the UCLA doctors at askthedoctors@mednet.ucla.edu.
