Those suffering from illnesses or symptoms deriving from stress and pressure, such as
Pains in general and headaches in particular, problems related to the digestive system – irritable bowel, high blood pressure, insomnia, excessive perspiration in the palms, soles, and underarms, breathing difficulties, etc.
 

Those suffering from disorders whose source is organic, such as
Attention Disorders with or without Hyperactivity, Cerebral Palsy, Movement Disorders, Epilepsy, Tinnitus (ringing in the ears), Difficulties in controlling excretory functions (urinary and fecal incontinence), Muscle rehabilitation following a stroke or accident, Circulatory Disorders (e.g. Reynaud's Disease), etc.
 
Those suffering from disorders whose source is psychological, such as
Anxieties, Fears, Shock in general and Shell shock in particular, Post Trauma Stress Disorder, Panic Attacks, Test anxiety, Social Anxiety, Fear of flying, Depression, Substance abuse,  , nervousness and "short fuse" reactions, bedwetting, sexual dysfunction, etc.
It should be noted and remembered that, as opposed to other methods where the patient is typically passive,with the biofeedback technique, the patient is actively contributing to achieve his wellness.

Problems Deriving From Stress and Pressure

• Headaches 
• Irritable bowe
• High blood pressur
• Sleep disorders
• Excessive perspiration in the palms, soles and underarms
• Breathing difficulties

Disorders Whose Source is Organic

• Attention Deficit Disorder
• Cerebral palsy
• Movement disorders
• Epilepsy
• Tinnitus
• Difficulties in controlling excretory functions (urinary and fecal incontinence)
• Muscle rehabilitation
• Cardiovascular illnesses

Disorders Whose Source is Psychological

• Post Traumatic Stress Disorder
• Shell shock
• Anxieties
• Panic attacks
• Test anxiety
• Depression
• Eating disorders
• Substance abuse
• Bedwetting
• Sexual dysfunction