Hair loss among teenagers can be caused by different factors such as stress, bad nutrition, or some medical conditions. Do you detect more hair than usual lying on the pillow or in the shower? Start eating a balanced diet, managing your stress, and being gentle with your hair. If it still happens, visit a dermatologist. 

You might have a medical condition named acanthosis nigricans. It can sometimes cause the lower face to be darker than the rest. It's not dangerous but could be a sign of something more serious, like insulin resistance, that is happening inside your body. You can fix this by eating cleaner, being active, and maintaining skin health. Furthermore, consume a lot of water. 

The round ulcer on the left side of your mouth might be due to a lot of reasons, like biting your cheek accidentally or a viral infection. Since you are not feeling any pain or eating difficulty, it seems to be a minor issue. You can try swishing your mouth with warm salt water or avoiding spicy and hot foods for a couple of days and see if it helps. If it doesn't go away after a week or two, it's best to have it checked by a dentist to be safe. 

Fungal infections can make your skin red, itch, and sometimes hurt. These infections usually like to grow in warm and moist places, so butt skin can be the common spot. To help mop it up, keep the area clean and dry, wear loose clothes, and apply antifungal creams or powders that the pharmacist recommends. To get it if it still comes back, you may need a stronger prescription from the doctor to get rid of it.

When your skin gets hot, a blister may form as a way to protect itself while healing. It's important to keep the blister clean and dry. Avoid popping it, as this can cause an infection. If the blister is painful or looks discolored, it's best to see a dermatologist.

The black lines on your nails may be due to a condition called linear melanonychia. To describe it in layman's terms, it can be a black or brown streak on your nail. It can result from traumas to the nail, mole, or even some medications. If such a symptom appears, it is best to get it checked by a dermatologist for safety. 

The mild pain and fever may also be related to an infection. The swelling on the skin is a sign that the skin is inflamed. This type of infection may be the result of bacteria or viruses. To get rid of this, you might have to use antibiotics that are prescribed by a dermatologist. Cleanliness and dryness of the area will facilitate quick healing of the injury.

Skin red rashes are not a rare thing and can be caused by several things such as allergies, eczema, and infections. If the rash hurts or is itchy, it's better not to self-medicate and go to a dermatologist for the right treatment. Some rashes can be made better with cool compresses or light lotions, but first, it is crucial to find the reason. 

Hair loss caused by nerves due to teenage girls’ stress, food deficiency, or changes in hormones could be the reasons besides others. Zincovit is a multivitamin that contains zinc, a mineral that is vital for hair health. It can be used by girls who have this problem. Nevertheless, in addition to a healthy diet and good stress management, better hair health is guaranteed.

You are possibly suffering from a disease called acanthosis nigricans. The skin on the lower part of your face may be discolored due to this. It is mostly associated with conditions like insulin resistance or hormonal fluctuations. For its treatment, you can try healthy eating, exercising, and skin cleanliness. Seek help from a dermatologist for further assistance.

You could get relieved by itching, red spots, and peeling sometimes. Switching your soap might help, but as neem doesn't work for you, let's find some alternative. Seek for soaps endowed with the elements such as tea tree or coconut oil. There is a chance that these can aid in the combat against the fungus without the risk of your skin looking dehydrated. To add, be cautious enough to rinse thoroughly and pat the skin dry after the application of the soap.

Boils are caused by infected hair follicles and can be painful and swollen. To help them heal, apply warm compresses to the area at least three times a day. This can reduce pain and help the boil drain naturally. Keep the area clean and avoid squeezing or picking at the boil, as this can worsen the infection. If the boil does not get better or gets bigger, it is a good idea to consult a dermatologist for a check-up and treatment.

It sounds like you're experiencing significant hair loss and thinning, especially on the top of your head. This can be due to factors like stress, poor diet, genetics, or certain medical conditions. To address this, try eating a balanced diet, managing stress, and using gentle hair care products. It's also important to visit a dermatologist to check for any underlying health issues that might be causing the hair loss.

Jock itch is the fungal infection which is the most common cause of the groin itching and redness. Since you've gone through surgery for hydronephrosis, you must keep the area well-hygienic and dry to treat jock itch. Using regular antifungal creams you can purchase without a prescription. Do not go for tight-fitting clothes and change into clean, dry ones often. If the jock itch persists, it's advisable to consult your dermatologist for the next steps.

Hair loss can be caused by stress, scalp fungus, and dandruff, which create an unhealthy environment for hair growth. To improve scalp health and reduce hair loss, try natural remedies. Use mild shampoos for dandruff, manage stress with relaxation techniques, and consult a dermatologist for scalp fungus. With the right treatment, you may notice your hair starting to regrow.