Scalp pimples without pain or itching

Scalp pimples are mostly caused by rashes, but there are many types of rashes, such as eczema, prickly heat, urticaria, solar dermatitis, etc., which can all cause skin pimples. However, if the rashes are on the scalp, they should be treated as soon as possible to avoid serious disfigurement in the future. Generally, rashes will not leave any marks if treated early. Let the editor introduce the relevant rashes in detail below.

eczema:

Itchy bumps on your body may also be a sign of eczema. Eczema is caused by a variety of internal and external factors and has obvious symptoms: acute deterioration of the primary source with redness, swelling, erosion, and exudation; secondary sources appear 1-2 weeks after onset, manifested as papules, vesicles, erosion, exudation, etc.; eczema lesions are often distributed on the limbs, especially the upper limbs, but can also occur on the trunk, face and neck.

Urticaria:

Urticaria can cause red bumps to appear on the skin. Symptoms include sudden redness, swelling, and itching of the skin, and the appearance of rashes of various sizes and shapes. They are isolated or scattered at first, gradually expand, and merge into patches. Most of these rashes will automatically disappear within 24 hours, but new rashes will occur one after another. It can be divided into acute urticaria, chronic urticaria, angioedema and papular urticaria.

Solar dermatitis:

Solar dermatitis is caused by some people's allergy to ultraviolet rays. It usually occurs 1-2 hours after sun exposure. The rash often occurs on the face, neck and "V"-shaped area in front of the neck, back of the hands and upper limbs, and manifests as small papules and blisters, and it is itchy. In severe cases, the rash may also appear on non-exposed parts. It is painless, but the itching is obvious and disappears very slowly.

Insect bite dermatitis: