There are a variety of conditions which can lead to scalp scabs. Most scabs in this region do not come from a condition itself, but from scratching. When the skin is scratched regularly, it may break and a lesion is formed. As this lesion heals a scab is the result. Common conditions of the scalp which may lead to itching and irritation, and thus scratching, include psoriasis, dandruff, eczema, and sunburn.
To prevent scalp scabs from appearing in the first place, it is important to resist the urge to scratch. If an underlying skin condition is to blame for severe itching, it is a good idea to see a dermatologist for proper treatment. Creams, gels, and specialized shampoos can often be prescribed to help alleviate the symptoms until healing takes place.
If scratching has already occurred and scalp scabs have become a problem, it is important not to pull or pick at the scabs, as this could lead to additional bleeding and prolong the healing process. Scabs form as the body’s immune system sends platelets to the injury site to plug the wound, prevent bacteria from entering and to clot the flow of blood. By pulling off these scabs one may reopen partially healed wounds and cause additional soreness and scabbing.
Occasionally a bacterial or fungal infection may cause scalp scabs even without itching. These infections can cause open sores or boils which may erupt and heal over with time. Once healing has taken place, scabs can appear. Any condition which causes frequent sores or scabbing should be checked by a family doctor or dermatologist. Scabs which do not go away on their own despite being left alone could signal an underlying disorder.
Occasionally skin cancer will be found on the scalp, especially since this area is often left unprotected from the sun. Hair is not adequate sun protection, even in those with long hair, because ultraviolet rays can still get through.
There are rarely severe complications with scalp scabs aside from discomfort and the appearance of unsightly scabs if hair is thin, but sometimes more severe side effects do occur. If scabs become very severe, the hair may begin to thin and fall out, especially if a serious skin condition is to blame. Scratching the scalp repeatedly or picking scabs can lead to more severe wounds and sometimes infections can result. In this case, an antibiotic ointment may be prescribed to kill bacteria and promote healing.