You may have hives. Hive­s are caused when some­thing bothers your body. This something can be food, plant, or dust. Whe­n your body dislikes these things, it make­s hives. The hives move­ around your body and come and go. To feel be­tter with hives, stay away from things that bother you. You can take­ medicine to stop the itching. Drink lots of wate­r and get plenty of rest. 

It is possible that the black vertical line on the boy's thumb nail is a result of a melanonychia striata, which is a linear nail melanin pigmentation. It is relatively common in children and is generally harmless. However, it is important to have it evaluated by a doctor, especially if it is growing, to rule out any underlying medical conditions.

It can cause burns and pain by touching the skin. Cold water makes it cold. Then take Ibuprofen or other painkiller plus cover it tightly with a bandage after wrapping it with moist and cool dressing.

Acne scars and pigmentation can be treated with topical creams, chemical peels, and laser therapy, depending on the severity of the condition. You must consult a dermatologist for correct diagnosis and treatment plan.

vitiligo has varying recovery periods depending on how severe the patches and where they are located. The improvements from the treatment options such as topical medications, light therapy and surgery can last several weeks to months. The best results occur with professional medical advice and close adherence to the treatment regimen prescribed.

Skin redness and irritation have been linked to the use of Clindamycin Phosphate Gel 3%. You may be having an allergic reaction to the gel. It is advised that you should discontinue the use of gel and seek consultation with a dermatologist for appropriate assessment and treatment.

Your skin has lost its radiance. Dullne­ss occurs when your body lacks hydration, rest, or nutrients. Incre­asing water intake, getting prope­r sleep, and consuming fruits and vege­tables can revive your glow. Additionally, ge­ntle exfoliation remove­s dead cells, uncovering re­newed skin underne­ath. Don't neglect sun protection; use­ sunscreen. 

The acne has to be treated accordingly as it is appearing in many parts of the body. The acne medications will control excess oil. Tuberculosis treatment may affect your hair as well as skin. I thus urge you to meet a dermatologist nearby and get evaluated for further treatment. Also start using anti-oxidant capsules, they will help a lot.

If you notice some vein-like structures on your penis glans, those are likely just normal blood vessels that have become more visible. You may notice this more during arousal. Usually, it’s not anything to worry about and doesn’t need treatment. However, if they are causing you pain or discomfort, or if they have appeared suddenly, it would be best for you to see a doctor so they can be evaluated further.