Patient description: Fernandez is a 41 year man who is a professional soccer player. He came to the clinic with itchy foot. Physical exam revealed localized scaling and maceration between the third and fourth of his right toe. It became inflamed and sore, with mild fissuring. The dorsum and sole of the foot was unaffected. There is no pus or tearing in the affected area. He didn't use ant topical ointment on the lesion and has no positive history for any underlying disease such as DM. He smokes 15 cigarettes per day and drinks a beer per day. His family history is positive for hyperlipidemia in her mother and MI in her father. He is in relation with several partners and use condom during the intercourse. His physical exam and lab studies were normal otherwise. Tinea pedis infection confirmed as his diagnosis by the observation of segmented fungal hyphae during a microscopic KOH wet mount examination.

Clinical trial eligibility criteria: eligible ages (years): 18.0-45.0,  Fasting Is the individual a healthy, normal adult man and women who volunteers to participate? Is s/he within 18 and 45 years of age, inclusive? Is his/her BMI between 19 and 30, inclusive? Is she willing to avoid pregnancy by abstaining from sexual intercourse with a non-sterile male partner, or by the use one of the following methods: diaphragm + spermicide or condom + spermicide (at least 14 days before dosing), intra-uterine contraceptive device or hormonal contraceptives (at least 4 weeks prior to dosing), or has she been surgically sterile or post-menopausal at least six months prior to entering into the study? Is s/he considered reliable and capable of understanding his/her responsibility and role in the study? Has s/he provided written informed consent? A no answer to any of the above questions indicates that the individual is ineligible for enrollment  Does the individual have a history of allergy or hypersensitivity to desloratadine? Does s/he have clinically significant laboratory abnormalities that would interfere with the conduct or interpretation of the study or jeopardize his/her safety? Does s/he have significant history or clinical evidence of auto-immune, cardiovascular, gastrointestinal, hematological, hematopoietic, hepatic, neurological, ongoing infection, pancreatic, or renal diseases that would interfere with the conduct or interpretation of the study or jeopardize his/her safety? Is she nursing? Does s/he have serious psychological illness? Does s/he have significant history (within the past year) or clinical evidence of alcohol or drug abuse? Does s/he have a positive urine drug screen or a positive HIV-1, or hepatitis B or C screen, or a positive pregnancy test? Is s/he unable to refrain from the use of alcohol or xanthine-containing foods or beverages during periods beginning 48 hours prior to study drug administration and ending when the last blood sample has been taken in each study period?  Has s/he used any prescription drug, other than hormonal contraceptives, during the 14-day period prior to study initiation, or any OTC drug during the 72-hour period preceding study initiation? Is s/he unable to refrain from the use of all concomitant medications, other than hormonal contraceptives, during the study?