Skin and subcutaneous (L00-L99).
- Acrodermatitis atrophicans – skin disease secondary to Lyme disease infection.
Cardiovascular system (I00-I99)
- Acute arterial occlusion
- Vascular spasm
- Lymphangitis (inflammation of the lymphatic vessels)
- Lymphedema – storage of lymph fluid in the tissue.
- Muscle fiber tear
- Peripheral arterial occlusive disease (pAVK) – progressive narrowing or occlusion of the arteries supplying the arms/ (more commonly) legs, usually due to atherosclerosis (arteriosclerosis, hardening of the arteries).
- Postthrombotic syndrome – chronic congestion of blood returning to the heart as a result of thrombosis.
- Raynaud’s syndrome – circulatory disorders of the hands or feet.
- Thrombangiitis obliterans (synonyms: endarteritis obliterans, Winiwarter-Buerger disease, Von Winiwarter-Buerger disease, thrombangitis obliterans) – vasculitis (vascular disease) associated with recurrent (recurring) arterial and venous thrombosis (blood clot (thrombus) in a blood vessel); symptoms: Exercise-induced pain, acrocyanosis (blue discoloration of body appendages), and trophic disturbances (necrosis/tissue damage resulting from cell death and gangrene of fingers and toes in advanced stages); more or less symmetrical occurrence; young patients (< 45 years).
- Thrombophlebitis (phlebitis).
Infectious and parasitic diseases (A00-B99).
- Erysipelas – acute areal skin infection caused by streptococci.
Musculoskeletal system and connective tissue (M00-M99).
- Baker’s cyst (popliteal: belonging to the popliteal fossa); popliteal cyst) – cysts usually become symptomatic only between the 20th and 40th year of life; however, they can also be observed already in the 1st decade of life; symptomatology: feeling of pressure in the area of the popliteal fossa with occasional radiation into the calf.
- Degenerative joint changes such as osteoarthritis.
- Gout attack
- Lumboischialgia – back pain that also radiates to the legs.
- Rheumatism
- Spinal stenosis – narrowing of the spinal canal.
Symptoms and abnormal clinical and laboratory findings not elsewhere classified (R00-R99).
- Posttraumatic swelling – after injury.
Medication
- See “Causes” under medications
Environmental pollution – intoxications (poisoning).
- Ergotism – poisoning by the ergot.
