David Thomas Robles

A physician would numb the area locally and use a scalpel to open up the abscess and drain the pus and clean it and pack it with antibacterial gauze.

True skin tags are benign growths and therefore of no consequence, unless of course it gets snagged on clothing and/or inflamed.

Seborrheic dermatitis is a common, noncontagious, easy-to-manage skin condition of the scalp caused in part by an overgrowth of a type of yeast called Malassezia, which is present on everyone’s skin. Ringworm of the scalp (tinea capitis) is a fungal infection of the scalp and hair shafts that is contagious. This infection usually needs oral antifungal treatment. In Seborrheic dermatitis, the acidity of apple cider vinegar might limit the proliferation of malassezia fungus.

Apple cider vinegar
An apple cider vinegar soak will loosen the scales on your scalp. It may also lessen inflammation in the area of the flare-up. To use this treatment:

-Wash your hair with shampoo.
-Apply a diluted solution of apple cider vinegar to the area.
-Let the vinegar and water sit on your scalp for a few minutes.
-Rinse well.

Acne is a common skin condition involving blockage and inflammation of hair follicles. Acne can be summarized as an interplay of the following four factors: (1) plugging of the follicle, (2) excess sebum production, (3) the presence and activity of bacteria, Propionibacterium acnes, and (4) inflammation. The strongest and most effective treatment is isotretinoin.
http://davidroblesmd.blogspot.com/2016/10/acne-everything-you-need-to-know-by.html
http://davidroblesmd.blogspot.com/2021/04/accutane.html

Acne is a common skin condition involving blockage and inflammation of hair follicles. A warm or hot shower causes the blood vessels to dilate to release body heat, which will temporarily make acne look worse because the lesions may become more red.

Psoriasis can be treated with a variety of topical creams prescribed by your doctor. New lesions should be treated right away so they don't progress. But to keep from developing new lesions, systemic treatments may be needed.
http://davidroblesmd.blogspot.com/2014/06/psoriasis-is-chronic-inflammatory.html?view=sidebar

Acne extraction is a one way to get rid of blackheads and whiteheads. Tretinoin or adapalene are medications that can help prevent black heads. Larger, or deep, painful acne cysts/nodules can be injected by a dermatologist will inject the blemish with a corticosteroid.

Washing and gentle exfoliation may help to remove the clogged debris in the follicles. Salicylic Acid containing washes may help as well as night creams containing Retinol.

Yes Mohs surgery is safe and highly effective for skin cancer surgery.

Yes, hair will grow back once the fungal infection is treated.

Consult your physician to see which treatments are right for you. Your doctor may prescribe an antifungal nail polish called ciclopirox (Penlac). It's applied to infected nails and surrounding skin once a day. You may need to apply for up to a year. Oral antifungal drugs like terbinafine (Lamisil) and itraconazole (Sporanox) can be used but blood tests are required to check for liver issues. You typically take this type of drug for six to 12 weeks depending on whether finger nails or toe nails are involved.

Skin cancer surgery like Mohs involves anesthetizing the skin with local anesthesia. This means using several needles to infiltrate the skin with anesthetic like lidocaine. There is some minor pain from the injections and the sting of the lidocaine, but generally this is quite tolerable. Post surgical pain (like when the anesthesia wears off, generally can be treated with ibuprofen or Tylenol.

Various anti-dandruff shampoos like Ketoconazole, zinc pyrithione (head and shoulders) or selenium sulfide (Selsun Blue) can be helpful. When that is not sufficient, your doctor can prescribe topical corticosteroids

Common scaling rashes on the face include, seborrheic dermatitis (aka dandruff), eczema, contact dermatitis and psoriasis. Check with your doctor for an examination.