Tulburare functionala manifestata prin oboseala si diverse alte acuze fizice, constitutionale si neuropsihologice. Oboseala, concentrare dificila, cefalee, durere de gat, noduli limfatici durerosi, mialgii, artralgii, subfebrilitate, tulburari de somn , probleme psihiatrice, alergii, crampe abdominale, pierdere in greutate, eruptie, tahicardie, crestere in greutate, durere in piept, transpiratii nocturne.