Many people have hair or scalp problems. Hair may thin or fallout, break off, or grow slowly. Dandruff or an itching or peeling scalp could cause embarrassment and discomfort. Hair and scalp problems can be upsetting, however they will not be caused by serious medical problems.
 
Hair loss
Hair loss, including thinning and breaking, is the most frequent scalp problem. A lot of people lose from 50 to 100 hairs each day.
 
Hair slowly but surely thins as people age, although not all people are afflicted to the same degree. Hereditary thinning or balding is the most frequent cause of hair thinning. You could inherit this from either your mother’s or father’s side of the family. Women with this trait develop hair thinning, while men could become completely bald. The problem can start in the teens, 20s, or 30s.
 
Babies often lose their fine baby hair, which is then replaced by mature hair. Due to changes in hormones, women often lose hair for 1 to 6 months after childbirth or after breastfeeding is completed.
 
Other possible causes for excessive hair loss, thinning, or breakage include:
 
Harm to the hair from hair care products, such as dyes and permanents, and from hot rollers, curling irons, or hair dryers.
Hair-pulling or hair-twisting habits. Trichotillomania is a mental medical condition when a person pulls out his or her own hair, usually from the head, eyelashes, and eyebrows.
Side effects of medicines or procedures, such as chemotherapy or radiation therapy.
Recent surgery, high fever, or emotional stress. You might have a lot of hair loss four weeks to three months after severe physical or emotional stress. This sort of hair thinning usually stops within the few months.
Diseases, such as lupus and hyperthyroidism.
Rock poisoning, such as thallium or arsenic poisoning.
Poor nutrition, especially insufficient protein or iron in the dietary plan.
Damage to the hair shafts from burns or other injuries.
Itching, flaking, or crusting of the scalp
Itching, flaking, or crusting of the scalp may be caused by:
Cradle cap, an oily, yellow crusting on the baby’s scalp. It’s quite common in babies and is not caused by an illness. It generally does not mean that a baby is not being well looked after. 
Dandruff, a shedding of your skin on the scalp that leaves white flakes on the top, neck, and shoulders. It might be a form of a condition of the skin called eczema, which in turn causes increased shedding of normal scalp skin cells. Dandruff can even be caused by a fungal infection. Hormonal or seasonal changes can make dandruff worse.
Head lice, tiny wingless insects that cause itching and raw patches on the scalp. Head lice are most usual in school-age children.
Ringworm, a fungal infection of the outer layer of the scalp and in the hair. It usually causes a rash consisting of circular patches with raised, red edges that resemble worms. The rash spreads from these edges, often leaving the center clear, giving it a ring shape.
Ongoing (chronic) skin conditions, such as psoriasis and seborrhea.
An uncommon, recurrent condition of the skin called lichen planus. This condition appears more regularly during stress, fatigue, or contact with medicines or chemicals.

When the symptoms aren’t too severe, approved medicated shampoos can relieve the existence of the scabs and reduce the itching sensation. Shampoos to treat scabs on the scalp due to psoriasis should include tar and salicylic acid.
In case the symptoms get more serious, or the shampoo will not decrease the itching, your dermatologist may prescribe steroids in the form of topical ointments or injections. Sometimes, the lymph gets swollen, in which particular case your physician may suggest antimicrobial creams.