What can I do about active acne and dark spots?

Several factors can cause black lumps. It's sometimes a self-resolving harmless blood blister that happens when you accidentally bite your lip or something more serious like skin cancer. Anyway, always be alert to the piece of the lump being uncomfortable, bloody, or growing in size. It's better to seek counseling from a physician to be cautious.

The contact dermatitis can last a long time. It depends upon the nature, frequency and duration of the exposure to the allergens. If the exposure to the allergens continues it might take very long time. If the exposure to the allergens is stopped then it will be recovered quickly.

You may have a condition called night sweats which might contribute to the effect of various factors, including anxiety, hormonal changes, or infections. Firstly, try to keep the room cool and comfortable at night, wear light pajamas, and don't consume caffeine before sleeping. In the morning, take clear water as much as your body can accommodate; this will keep the hydrated fluid in your body.

Sunburn can happen when your skin gets too much sunlight. It may feel red, hot, and painful. To cool the sunburn, you can try putting cool cloths and aloe vera gel on your skin. Avoid sun exposure until your skin has healed. Drink plenty of water to help your skin recover faster. Always use sunscreen to protect your skin from the sun.