What could cause constant itching in the lower legs more so left leg and most intense ankle?

1. Eczema: Eczema is a common skin condition that causes itching, inflammation, and redness. It can affect any area of the body, including the lower legs and ankles. Atopic dermatitis is the most common type of eczema and is often associated with allergies and asthma.

2. Psoriasis: Psoriasis is another skin condition that causes itching, scaling, and redness. It can affect any area of the body, but it commonly occurs on the elbows, knees, lower back, and scalp. Plaque psoriasis is the most common type of psoriasis and is characterized by thick, red patches of skin covered with silvery scales.

3. Athlete's foot: Athlete's foot is a fungal infection that affects the skin on the feet. It can cause itching, burning, and scaling. Athlete's foot can spread to the lower legs and ankles and can be particularly intense in the ankle area.

4. Contact dermatitis: Contact dermatitis is a skin reaction that occurs when the skin comes into contact with an allergen or irritant. It can cause itching, redness, and inflammation. Common allergens that cause contact dermatitis include poison ivy, poison oak, and certain metals, such as nickel. Irritants that can cause contact dermatitis include soaps, detergents, and chemicals.

5. Insect bites and stings: Insect bites and stings can cause itching, swelling, and pain. Insect bites and stings that occur on the lower legs and ankles can be particularly intense due to the increased blood flow to these areas.

6. Scabies: Scabies is a contagious skin condition caused by tiny mites that burrow into the skin. It causes intense itching, especially at night. Scabies can affect any area of the body, but it is commonly found on the hands, wrists, elbows, and lower legs.

7. Diabetes: Diabetes can cause nerve damage, which can lead to itching in the lower legs and ankles. Diabetic neuropathy is a common complication of diabetes and can also cause numbness, tingling, and pain in the feet and legs.

8. Poor circulation: Poor circulation can cause itching in the lower legs and ankles. This is because poor circulation can lead to a buildup of fluid in the legs and ankles, which can cause the skin to become dry and itchy.

9. Kidney disease: Kidney disease can cause itching in the lower legs and ankles. This is because kidney disease can lead to a buildup of toxins in the blood, which can cause the skin to become dry and itchy.

10. Liver disease: Liver disease can cause itching in the lower legs and ankles. This is because liver disease can lead to a buildup of bile in the blood, which can cause the skin to become dry and itchy.