A keloid is when the skin grows too much after an injury has healed. They may feel itchy or painful. You could use silicone sheets or gel over the wound to stop it from growing back. Additionally, ask your physician about corticosteroid injections which can help flatten the keloid. 

A friction burn on the­ penis head can make it re­d and uncomfortable, especially if se­men touches it. Howeve­r, the risk of developing anti-spe­rm antibodies from this is low. To aid healing, ke­ep the area cle­an and avoid further irritation. If you notice any unusual symptoms or concerns, it's always wise­ to seek medical advice­.

Yes, breast milk is one of the avenues for passing down allergies to your child. The allergist or immunologist should be consulted for advice and treatment. 

If you put salt (NaCl) on a cut it may hurt a bit. The reason for this is that salt is able to kill germs. Therefore if you rub salt in a wound it will only be painful temporarily. If it hurts too much or continues hurting for too long, rinse the area with water. An application of a mild ointment has the ability to protect broken skin.

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.