Itchy head can be caused by lice, head lice disease, or other causes, such as ringworm, seborrheic dermatitis, drug rash, contact dermatitis and other causes.
1. Head lice disease: lice parasites in the hair, will bite the scalp, the skin caused by red spots, pimples, itching intense, so itchy head may be lice.
2. Tinea capitis: dermatophyte infections that involve the hair and scalp can also lead to symptoms of itchy head.
3. Seborrheic dermatitis: the etiology is unclear, and Malassezia colonization, increased sebum secretion, impaired skin barrier function and other factors, can also lead to itchy head symptoms.
4. Drug rashes: allergic reactions to drugs caused by topical or systemic medications may also involve the scalp and lead to itchy head.
5. Contact dermatitis: contact dermatitis caused by the use of hair dyes, shower gels and other products can also cause symptoms of itchy head.
Itchy head is not necessarily lice, there may be other reasons, you need to go to the hospital for examination, clear cause of treatment as prescribed by the doctor.