Locus of control, assertiveness, and anxiety as personality variables in stress-related headaches.
D000293:Adolescent; D000328:Adult; D001008:Anxiety Disorders / Q000523:psychology*; D001242:Assertiveness; D005260:Female; D006261:Headache / Q000523:psychology*; D006801:Humans; D007389:Internal-External Control; D008297:Male; D008875:Middle Aged; D010556:Personality Tests; D013315:Stress, Psychological / Q000150:complications*