Bydureon (single-dose pen): use immediately once the medication has been mixed. Byetta: pen should be discarded 30 days after initial use. SymlinPen: pen should be discarded 30 days after initial use. Tanzeum (single-dose pen): must use within 8 hours once the medication has been mixed.
There are many possible causes of foot rashes. Athlete's foot is one of the more common causes. Additional causes include irritant or contact dermatitis, allergic rashes from shoes or other creams, dyshidrotic eczema (skin allergy rash), psoriasis, keratodermia blennorrhagicum, yeast infections, and bacterial infections.
Skin conditions that cause itching specifically to the feet include: 1  allergic contact dermatitis, which can be caused by something like new laundry detergent. 2  athleteâs foot/tinea pedis (fungal infection). 3  atopic dermatitis. 4  juvenile plantar dermatosis.