Remember, you canât out-exercise a bad diet so if youâre eating too many calories each day, it doesnât matter how much walking youâre doing since you will not be able to burn it all off. So, focus more of your attention on the foods youâre eating.
1 Keratosis pilaris causes numerous small, rough, tan or red little bumps around hair follicles on the upper arms, thighs, buttocks, and cheeks.  Keratosis pilaris creates the appearance of gooseflesh, goose bumps, or chicken skin.
1. Drug Rash. Medications can cause drug rash due to allergic reactions, side effects or skin's sensitivity to sunlight after taking certain medicals. Common drugs that can cause rashes on arms and legs include anti-seizure medications, antibiotics, or diuretics.