Gout

Gout - Typical Characteristics, Causes & Treatments.

Overview

Gout is a common and painful form of inflammatory arthritis caused by the accumulation of monosodium urate crystals in and around the joints. It typically presents as sudden "flares" of intense pain, swelling, and redness, most famously affecting the base of the big toe.

Key Characteristics

Symptoms: Sudden onset of severe pain, heat, and swelling, often peaking within 12–24 hours. Even the weight of a bedsheet can be unbearable.
Common Sites: While the big toe is the most frequent site (up to 90% of cases), it also affects the ankles, knees, elbows, wrists, and fingers.
Cause: Sustained high levels of uric acid in the blood (hyperuricaemia). Uric acid is a waste product from the breakdown of purines, found naturally in the body and in certain foods.

Causes of Gout

Gout is caused by hyperuricemia, a buildup of excess uric acid in the blood that forms sharp crystals in joints, triggering severe pain and inflammation. This occurs when the body produces too much uric acid or, more commonly, the kidneys fail to remove enough of it. It is often triggered by high-purine diets (red meat, seafood, alcohol)

Stages of Gout

Gout often progresses through four clinical phases:

HSS | Hospital for Special Surgery

Asymptomatic Hyperuricemia: High uric acid levels in the blood without any symptoms.
Acute Gout Flares: Sudden attacks of joint pain and inflammation.
Intercritical Gout: The symptom-free periods between flares, though crystals may still be depositing quietly.
Chronic Tophaceous Gout: A late stage where permanent lumps of crystals (tophi) form under the skin, potentially leading to joint destruction and deformity.

Risk Factors

Diet: High consumption of red meat, organ meats, certain seafood (anchovies, mussels), and alcohol (especially beer and spirits).
Genetics: A family history of gout significantly increases risk.
Medical Conditions: Obesity, high blood pressure, diabetes, and chronic kidney disease are strongly linked to gout.
Age and Sex: More common in men (typically starting between ages 30–50) and postmenopausal women.