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Red raises and burning sensation around the head or foreskin could be due to bacterial or yeast overgrowth. Try to decrease carbohydrates intake and increase cooked vegetable intake and fermented foods.
Kindly apply coconut oil around the penis area for five to seven days. Coconut oil has antibacterial, anti-inflammatory, and moisturizing properties.
Regarding penis size, it can be increased with hormones or surgery.