Osteoporosis
Definition: Osteoporosis is a bone disease characterized by a decrease in bone density and quality, making bones more fragile and prone to fractures, even from minor impacts or falls.
Population affected: Mainly postmenopausal women, but also elderly men. The risk increases with age.
Common causes: Calcium or vitamin D deficiency, menopause, family history, sedentary lifestyle, excessive alcohol consumption, smoking, certain medications (such as corticosteroids).
Ankylosing spondylitis
Definition: Ankylosing spondylitis is a chronic inflammatory disease that primarily affects the spine and sacroiliac joints. It can cause progressive stiffness of the spine and persistent pain, especially in the lower back.
Affected population: Mainly young men between 15 and 40 years old, although women can also be affected.
Common causes: Genetic predisposition (notably the presence of the HLA-B27 gene), immune system dysregulation, and environmental factors that are still poorly understood.
gout
Definition: Gout is a form of inflammatory arthritis caused by the accumulation of uric acid crystals in the joints, leading to sharp pain, swelling, and redness, often in the big toe.
Affected population: Adults over 40 years old, especially men. The risk increases with age, obesity, and certain dietary habits.
Common causes: Excess uric acid in the blood (hyperuricemia), excessive alcohol consumption, diet rich in purines (red meat, organ meats, seafood), family history, kidney diseases, certain medications (diuretics).
Arthrose
Definition: Osteoarthritis is a chronic joint disease characterized by the progressive wear of the cartilage covering the ends of the bones. It causes pain, stiffness, and loss of mobility, especially in the knees, hips, hands, and spine.
Affected population: Adults over 50 years old, especially women after menopause. The risk increases with age, overweight, and certain repetitive physical occupations.
Common causes: Natural aging of the joints, overweight, previous joint injuries, genetic predisposition, intense professional or sports activities, anatomical abnormalities.
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