Your brother might be suffering from a skin condition named eczema, or it is known as atopic dermatitis. It is the first step to the development of red bumps and dry, scaly patches on the skin. The development of eczema can be sometimes as a result of dry skin, stress, or allergies. To relieve symptoms, recommend your brother to apply soft moisturizers, avoid soaps that are too strong, cover him with comfortable and breathable clothes. If the problems will continue, seek the advice of a dermatologist. 

Acne occurs when the oil and the dead skin cells can no longer exit through the pores, thus they produce pimples. The dark marks left by the acne might be possible. A gentle cleanser that is used twice daily and an oil-free moisturizer every other day can be helpful. Besides, try using the products that contain benzoyl peroxide or salicylic acid to cure acne. 

Your child may have a skin condition called eczema, which affects only a limited number of children. Eczema can sometimes be accompanied by irritation, redness, and itching of the skin. It's quite common in infants. Changing the soap that is used could be a solution, but that is not always the case. Use a mild moisturizer that is not perfumed and avoid harsh soaps from your baby's routine. However, the problem continues, it is wiser to see a dermatologist for guidance.

The dark spots could result from excess pigmentation or skin irritation. Pimples result from the pores being blocked and the presence of bacteria. To help, wash your face twice a day, prefer soft, antioxidant skincare products, and never touch your face. If the situation is unchanged, it is recommended to visit a dermatologist for guidance.

It is safe to use a friend's derma roller after disinfection if it has been sprayed with alcohol. HIV is a sexual infection; sharing needles is one of the transmitter. A sterilized roller is thus no cause of fear or stress if someone else has got HIV. Such sterilized tools do not risk transmitting HIV.

A part of your hand, likely where the infection started, may have been affected by the pen blast. This infection could now be spreading and causing other symptoms like headaches, stomach pain, tingling, and a fast heart rate. This is serious, as it can lead to tissue damage and become life-threatening if it spreads through your blood. Getting immediate medical treatment from a dermatologist is essential.

If you’ve been using nonsteroidal anti-inflammatory drugs (NSAIDs) daily, which can harm the upper GI tract, consult a doctor. You should get tested for Helicobacter pylori, and if positive, start the recommended treatment. Consulting a gastroenterologist for ways to help your stomach heal can also be beneficial.

The lumps on your chest may be a frequent phenomenon doctors refer to as post-inflammatory hyperpigmentation. It is a condition that is characterized by skin discoloration because of the old inflammatory lesions like those caused by the normal Trychophyton infection. In brief, these lumps are just the parts of your skin that were affected and are now darker because of that. Neem soap was an appropriate choice to lessen the itching, but for these bumps, it is better to let them dissipate by themselves. If you notice any changes or the bumps do not get better, then it would be a smart decision to get a consultation with a dermatologist.

It is typical for the nose to have whiteheads. These are the things that we, the people, call tiny white spots and that are the result of oil and dead skin cells that have clogged pores. Might be you just have oily skin or acne. Whereas a gentle cleanser will be enough to remove dirt from your face when you wash your face twice a day. Do not squeeze out the whiteheads to avoid infection. Non-comedogenic products should be used, and you may visit a dermatologist for more recommendations.

Pimples are a result of pore closures on the skin due to the plugs made of oil and dirt. Itching might be a symptom of your skin being inflamed. To relieve the problem, gently clean your skin with a mild cleaner, don't pick or squeeze the pimple, and use a spot treatment with ingredients such as salicylic acid or benzoyl peroxide.

The bump that is under your jawline could be a swollen lymph node. They typically appear as warm, reddish, and sore. Treating it at home, you can soak warm compresses in the area and maintain cleanliness. If the condition doesn't get better in a few days or worsens, you might have to visit a dermatologist for other treatments.

You may have a condition called penile adhesions, where skin at the top of the penis sticks to the head, causing discomfort and interfering with urination. Treatment usually involves a simple procedure to release the skin. Don’t leave it untreated—consult a dermatologist if you suspect this condition.

Pigmentation that occurs as a result of tanning removal agents is a skin problem where dark, scaly, patches appear. Symptoms may be monotonous and the colored patches that occur on the skin. Tang removers are composed of potent chemicals that can harm your skin and lead to these patches. To do this, first, you should stop using the tan remover and instead shift to more skin-friendly products. If the case is like this, shield them from the sun. 

Itchy and red rashes are some of the common signs of sensitivity when your skin's non-acceptance is projected. This might be due to the presence of certain chemicals in the spray to which your skin is sensitive. Perhaps, you should try a gentle body lotion to reduce the itching and rashes.

You may have gotten bitten by an insect, which your body doesn't like at all. Sometimes, such bites can result in skin all lumpy and itchy, as you have mentioned. If your PT INR levels are high, it indicates that your blood may take a longer time to clot. You should apply some anti-itch cream on the bite and also visit the physician to do your PT INR check. They could need to adjust your medicine. 

You could be suffering from frenulum breve, which is a scenario where the skin under the penis head is too tight. The frenulum may thus tear or break as a result of sex or even masturbation in such a situation. This injury may be painful, or it may cause bleeding and, sometimes, it may make it hard for the foreskin to be retracted. Persuadables such as gentle stretching exercises or circumcision become apt solutions here. However, in the process of stretching, you have to be extra careful not to cause more harm, and in case of any complications, do not hesitate to seek professional medical help from a dermatologist.