If the person is currently in a severely stressful situation, the therapy may help but it probably won't be nearly as effective as it would be with a person not in such a situation. If you decide to try, make a list of other conditions you have such as depression, phobias, stage fright, psoriasis and other skin diseases, panic attacks or anxiety, sleeping problems, dyslexia, allergies, learning problems for specific subjects, test anxiety, etc., because I can shotgun those and some or most will be cured or helped. I have not been successful with weight loss to any extent and don't do it, nor have I been successful with hyperactive kids. I don't do smoking or drug addiction. The body responds in different ways to different stresses.
Different people respond differently to similar stresses.
One may get migraines with neck and shoulder tension while another gets psoriasis, both caused by repressed anger. The best therapy is to disconnect a person emotionally from all upsetting emotional experiences and not work on a specific symptom. I can actually treat persons knowing nothing of their symptoms or background and without them saying a word. I conducted classes averaging about 50 people for 8 years, very successfully. I just went through and disconnected them from a variety of common emotional upsets.