In 1969, he took a degree in Medicine at Santiago University and his doctor's degree at the Autonomous University of Barcelona in 1975. In 1974, he specialized in Internal Medicine at 'Valle d'Hebrón' Hospital in Barcelona. Until 1982, he worked as doctor of Internal Medicine at Valle d'Hebrón' Hospital in Barcelona. Since 1982, he has been the head of the Service of Internal Medicine at 'Juan Canalejo' Hospital in A Coruña. Since 1995, he has been a Professor at the Medicine College (A Coruña University). He is the coordinator of the AIDS unit at 'Juan Canalejo' Hospital. He is a member of the Clinical Advisory Committee of the AIDS National Plan (Ministry of Health). He is on the editorial staff of several national magazines about internal medicine. He was vice-president of the committee that organized the National AIDS Congress in A Coruña in 1995. Since 1998, he has been first president of the AIDS Galician Society. In 1994, he got 'Barrié de la Maza' Prize awarded by the Galician Academy of Medicine and Surgery for his study El Sida en Galicia (AIDS in Galicia).
He took part in four books related to HIV infection. He has over 200 publications and 500 national and international reports related to viral AIDS and hepatitis. He was a pioneer in Spain in his studies about Hepatitis type B (antigen e) and Hepatitis type A (Epidemiology in the 70's and early 80's). Since 1984, he has coordinated studies about AIDS at 'Juan Canalejo' Hospital and in Galicia. He took part in many international clinical tests about AIDS and hepatitis, mainly related to therapeutics of these processes. He directed ten doctoral theses related to hepatitis and AIDS virus. Many different research lines are carried out in his department, mainly those related to epidemiology and HIV infection.
He is a member of the European Society of AIDS and Hepatitis and the International AIDS Society. He took part as rapporteur in many conferences and courses related to HIV infection. Since 1973, he has also been on the Spanish Society of Writer-Doctors. He has a 15,000-volume library, mainly about cinematography