Can I achieve clear, beautiful skin at 19 with scars and acne?

If you happen to have a high fever with lip blisters and during pregnancy you can't use medicine, rest easy. These come from a virus mostly. Try petroleum jelly ointments or aloe vera to help in wound healing and to keep the area moist. Also, press a cold pack a couple of times a day. Don't forget to drink lots of water and have enough sleep for the body to strengthen and overpower the virus.

I suggest visiting a reputed dermatologist for your problem. Based on the severity of your acne scars and pores and other factors, the doctor may recommend the best treatment option for you which can include a combination of chemical peels, micro needling, laser treatments, or topical skincare products. 

Don't put ble­ach on your face if you have verruca plana. That skin issue­ happens when a virus infects your ce­lls. It creates odd growths. Harsh bleach irritate­s skin more, making problems seve­re. Follow your doctor's advice precise­ly. Treat your skin gently and patiently.

According to your symptoms, it is melasma that you might have. It is common during pregnancy as dark marks are forming on the face, especially on the nose and cheeks. It is recommended to visit a dermatologist who can accurately identify and treat your condition

It's important to use medicines the right way if you want them to work well. Too much doxycycline might give you a stomach ache, make you feel sick, or throw up. If you have taken 2 doses at once, just skip that particular time and take your next dose when it is due. Even after this drug may still be effective but not in the correct manner as before; so always consult with your doctor if doubtful about its efficacy. 

It appears that you are suffering from heat-induced Urticaria. This condition is defined by the occurrence of hives on skin along with severe itching following contact with heat. I would recommend consulting a dermatologist with expertise in skin diseases. They could suggest an appropriate treatment plan to provide symptom relief.

She might be allergic to crabs. Sometimes, our bodies come back to certain foods in the wrong way. Symptoms can be throat itching and eye swelling. In this case, she must not eat crab and other shellfish. In case of severe symptoms, she should go to the hospital immediately. Allergies can be life-threatening, so it's necessary to exercise caution.

When your skin feels itchy, turns red and sometimes swells up it's called itching eczema or dermatitis. This could happen if your skin is sensitive to things such as soap, fabrics even stress. To relieve the condition, consider mild bathing soaps, and gentle moisturizers as well as resist scratching at all costs. If this doesn’t work out then you should see a dermatologist who can prescribe some special creams

Sounds more like a case of chronic fungal infection, but itching and the patches are common symptoms. Better visit the dermatologist, who will be able to tell for sure what kind of treatment is proper for this case. They will recommend you a course of special antifungal creams and oral medicine