Blood-forming organs-immune system (D50-D90).
- Iron-deficiency anemia (anemia due to iron deficiency).
Endocrine, nutritional, and metabolic diseases (E00-E90).
- B12 deficiency*
- Folic acid deficiency*
Cardiovascular system (I00-I99)
- Arterial hypertension (high blood pressure).
- Chronic venous insufficiency – skin and vein changes due to circulatory disorders of the vessels.
- Peripheral arterial occlusive disease (pAVK) – progressive stenosis or occlusion of the arteries supplying the arms / (more often) legs, usually due to atherosclerosis (arteriosclerosis). This leads to a disturbance of arterial blood flow to the affected extremities.
Mouth, esophagus (esophagus), stomach, and intestines (K00-K67; K90-K93).
- Celiac disease – chronic disease of the mucosa of the small intestine (small intestinal mucosa) due to hypersensitivity to the cereal protein gluten.
Musculoskeletal system and connective tissue (M00-M99).
- Myalgia (muscle pain)
- Rheumatoid arthritis* (inflammation of the joints)
Psyche – nervous system (F00-F99; G00-G99)
- Akathisia – sitting restlessness; predominantly a side effect of neuroleptics (nerve depressants).
- Sleep onset myoclonia – twitching of various muscles during half sleep.
- Migraine
- Multiple sclerosis (MS)
- Myelopathies (spinal cord damage)
- Parkinson’s syndrome
- Polyneuropathy – disease of the peripheral nervous system.
- Sleep apnea syndrome – cessation of breathing during sleep that can cause daytime sleepiness and microsleep.
- Spinocerebellar ataxia (especially type 3) – gait disturbances due to spinal cord and cerebellar damage.
Symptoms and abnormal clinical and laboratory findings not elsewhere classified (R00-R99).
- Calf cramps
Genitourinary system (N00-N99)
- Renal insufficiency* (kidney weakness).
* Comorbidities (concomitant diseases).
