Scalp sores, bumps or blisters may be caused by folliculitis, impetigo, contact dermatitis, viral infections or skin conditions, such as acne, according to eMedicineHealth. Sebaceous or epidermal cysts and skin cancer may also eventually lead to sores on the scalp.Continue Reading
Sores on the scalp can be caused by infection of the skin, which is known as impetigo, or infection of the hair shaft, which is known as folliculitis. Sores may also arise due to an allergic reaction in the skin caused by contact dermatitis or viral skin infections, such as shingles and chickenpox. Acne can cause sores on the scalp as well. Cysts that are caused by plugged ducts in the hair shaft can become sores on the scalp.
In areas of the scalp that are not well-covered by hair, skin cancer can destroy tissues and cells and may appear as a sore that does not heal. This includes both squamous cell skin cancer, melanoma or basal cell skin cancer.
Treatment for sores on the scalp is dependent upon the cause of the sores. Some sores may heal on their own while those that take a long time to heal may require evaluation by a medical professional.Learn more about Skin Conditions