For periodontal disease grafting with flap surgery is the best treatment.

Bacterial infection and ringworm are two different things. Ringworm is fungal infection that presents rings generally over the areas where there is more sweating like thigh area, under the breast or armpit area and that is to be treated by anti-fungal medication for long time like 1-2 months. Bacterial infection is the one which is present with the puss and boils and has to be treated with antibiotics. Fungal infection on the scalp is very uncommon in adults and its only a problem of pre-school children. Proper diagnosis is required for the treatment to work. Consult a dermatologist for the same. 

Wisdom teeth usually needs surgical removal when it is impacted and is not getting enough space to erupt. As you have pain since 9 days ,you need to visit a dentist so can prescribe antibiotics and analgesics . But for time being can go for over the counter pain relief medicine like ibuprofen.

For recent onset acne at the age of 20 yrs. It is recommended to stop applying hair oil and use salicylic acid based facewash for face and gel containing clindamycin should be applied morning and evening. Topical retinoids can be applied at night. If acne doesn't clear with this you can consult dermatologist and also it is important to continue the treatment for longer time otherwise there are chances to reoccur after stopping the treatment.

If its only acne marks, continuing your acne treatment with facewash and gels will improve it. Some topical agents also helps in removing the pigmentation and marks of the acne. Even Salic acid 20% gel at night on spots is helpful. Glyco 6 or Glycolic acid 6% is recommended for application on the face. Acne compatible sunscreen is also helpful. Chemical Peeling with glycolic acid or salicylic acid is useful

By Padar Fungal infection it looks like you are talking about fungal infection of the foot which might present with the flaky or itchy sole. Generally it is more on one feet or just affecting one feet. If it is affecting both feet then its asymmetrical. The treatment is you have to wear less of shoes so that sweating is less. Open footwear is most preferable. Topical and oral antifungals is the mainstay treatment but if nail is also involved then treatment has to be taken for the long time so that the reserve side of the infection is treated. Consult a dermatologist for proper consultation.

If the hairs are falling from front at the age of 11 years that might be due to tractional alopecia or very tight tying of hair. There should be loose or normal tying of hairs. It is always better to consult a dermatologist for proper diagnosis and treatment.

Acne is multi-factorial problem, hormonal disease in most of the patients, diet, exercise, hygiene, grooming practices play important role.so visiting dermatologist and taking treatment is one option and maintain treatment for long time because if you are getting any improvement with the treatment then continue it otherwise dermatologist will change it. there are few things that has to be taken care. One thing not to apply hair oil, avoid having dandruff or use anti-dandruff shampoos weekly on the scalp, using face washes that have salicylic acid or glycolic acid. Avoid using thick greasy moisturizers or cream on the face. Use only creams that are gel based or water based. Drink plenty of water, avoid fat or cheesy diet, exercise 10-15 mins of the day. Topical steroids have to be avoided. Topical antibiotics like Clindamycin are useful. Oral Antibiotics or retinoids are advised.