Dysmenorrhea is a common problem in women of reproductive age. Primary dysmenorrhea is defined as recurrent, cramping pain occurring with menses in the absence of identifiable pelvic pathology .

Primary dysmenorrhea is characterized by a crampy supra-pubic pain that begins somewhere between several hours before and a few hours after the onset of the menstrual bleeding. Symptoms peak with maximum blood flow and usually last less than one day, but the pain may persist up to 2 to 3 days. Symptoms are more or less reproducible from one menstrual period to the other. The pain is characteristically colicky and located in the midline of the lower abdomen and may extend to lower quadrants, the lumbar area, and the thighs.

Menstrual low back pain (LBP) is one of the common complaints among women. Previous studies have indicated that more than 40% to 50% of the population experience LBP during the menstrual phase (days 1-6) of the menstrual cycle .

Inclusion Criteria:

1. Thirty adolescent females suffering from menstrual low back pain.
2. Their age will be ranged from 17 to 24 years.
3. Their body mass index will be ranged from 20 to 25 kg/m2.

Exclusion Criteria:

1. Personal and individual differences between the subjects.
2. Psychological and physical status of subjects which may affect the treatment and evaluation stage.
3. Environmental factors which may affect the subject's response