Tinnitus
Tinnitus is an auditory perception that is heard in one or both ears in addition to the sound actually reaching the ear. This perception is based on a disturbance of the hearing function. The sound of tinnitus bears no relation to the sounds in the patient’s surroundings. The phantom noises vary widely: they are described as humming or whistling, hissing, rushing, clicking or knocking.
Migraine
Migraine is a neurological disorder that affects around 10% of the population and has many different manifestations. In adults it is typically characterised by recurring, attack-like, throbbing headaches on one side of the head, which may be accompanied by additional symptoms such as nausea, vomiting, sensitivity to light (photophobia) or sensitivity to noise (phonophobia).
Sleep disorders
Sleep that is not restful impairs performance in the short term and, in the medium or long term, can also lead to illnesses worsening or newly developing. Sleep disorders are always considered clinically relevant when those affected also perceive them as a health problem and when they cause physical or psychological impairment.
Concentration problems
The term concentration disorder, also known as poor concentration, refers to a weakness or impairment of the ability to keep one’s attention focused, for example on a task. The term is used as a description of a symptom in medicine, education, psychotherapy and psychiatry. Concentration problems can have organic, psychosomatic or neurological causes and occur to varying degrees.
Allergic reactions
An allergy is an excessive, pathological defence reaction of the immune system to certain environmental substances that are normally harmless (allergens). Examples include house dust mites, animal hair, pollen and cross-allergies.
Intolerances
With a food intolerance, the organism is unable to digest certain food components or to process them metabolically.