Inclusion criteria:
Age more than 18 years
All patients diagnosed as distal esophageal manometry according to manometry
Exclusion criteria:
1. Patients abusing drugs
2. Patients with systemic disorders including :Mastocytosis Systemic vasculitis, Sarcoidosis, Hypothyroidism, Diabetes mellitus, Fibromyalgia, Adrenal insufficiency, Coeliac disease, inflammatory bowel disease, Hypertension (high blood pressure), Metabolic syndrome, AIDS, Graves' disease, Systemic lupus erythematosus, Rheumatoid arthritis, Atherosclerosis, Sickle cell disease, Myasthenia gravis, Systemic Sclerosis, Sinusitis