Objective. Highlighting seborrheic dermatitis prevalence in HIV patients and evaluating clinico-therapeutical correlations. Material and methods. Between 1.10.2011 - 31.12.2014 we performed a prospective study on a group of 121 HIV-positive patients hospitalized in the HIV Adults Department in the Infectious Diseases Hospital, Constanta, to determine the prevalence, clinical particularities and treatment response of seborrheic dermatitis in HIV + patients. Results. Seborrheic dermatitis has been reported in 33.05% of patients, predominantly male (M:F = 9:1), with peak incidence in the 20-30 age group. Lesions prevalence according to the site of seborrheic dermatitis was: face (15%), scalp (22.5%), face and scalp (45%), chest (12.5%). In terms of clinical severity, 27.5% patients had mild seborrheic dermatitis, while 62.5% had moderate seborrheic dermatitis, and 10% were diagnosed with the severe form. Therapeutic response was evaluated at day 7, 14 and after 8 weeks, assessing the decrease/disappearance of erythema and flaking, and pruritus improvement/remission. After 8 weeks of treatment, complete remission was reported in 70% patients. However, HIV+ patients with seborrheic dermatitis had between 2-5 episodes per year, relapses being reported at 4 to 12 weeks after discontinuation of treatment, mean 7 weeks. Conclusions. The present study indicates a moderate prevalence of seborrheic dermatitis in hospitalized HIV+ patients. Although clinical manifestations do not differ from those of seborrheic dermatitis in seronegative patients, the clinical course of disease reveals the extensive character of seborrheic dermatitis in HIV+ patients with more severe lesions, refractory to treatment, and frequent recurrences, even in patients receiving prolonged treatment. [ABSTRACT FROM AUTHOR]