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Seroma, infection or skin necrosis after liposuction: why they happen, how they are prevented and how they are treated

By Dr Sanjay Parashar, plastic surgeon · Dubai London Hospital, Jumeirah · 23 October 2026

Liposuction is done through small incisions, so most people expect no wound problems at all, and most heal without any. But beneath the skin, liposuction leaves a large area of loosened tissue, and that is where three problems can start: fluid collecting under the skin (seroma), infection, and damage to the skin itself (skin necrosis). Here I explain how to recognise each one, the SafePlast fundamentals I apply to reduce the risk, and how each is treated.

First: is this urgent?

Contact your surgeon the same day, or go to an emergency department, if you have any of these:

• Fever, shivering, a fast heart rate or feeling generally unwell
• Redness or swelling that is spreading
• Pain that is getting worse rather than better
• Skin that turns dark, purple, grey or black, or blisters
• Foul-smelling or cloudy discharge from an incision
• Sudden breathlessness or chest pain, or a painful, swollen calf

Serious infection after liposuction can spread quickly. Breathlessness, chest pain or a swollen calf can signal a blood clot and need emergency care.

The three problems

Seroma: fluid under the skin

A seroma is a collection of clear or straw-coloured fluid in the space left by liposuction. It feels like a soft, wobbly swelling, often on the lower abdomen, back or flanks, and usually appears one to three weeks after surgery. It is not dangerous in itself, but a seroma left alone can become infected or form a firm capsule.

Infection

Infection shows as redness, warmth, increasing pain, fever or discharge from an incision. Most infections respond to early treatment. Rarely, a fast-spreading deep infection develops, which is an emergency.

Skin necrosis: damage to the skin

If the skin loses its blood supply, or is injured by heat from energy-based devices, it turns dark, blisters and can break down into an open wound. This is more likely after aggressive liposuction just under the skin, heat-based devices used too close to the skin, very tight garments, or liposuction combined with other procedures in the same area.

Seven SafePlast fundamentals I apply to every liposuction

1. Staying within safe volume limits

I work within Dubai Health Authority limits: up to 5,000 ml of fat in one session, and up to 2,000 ml when liposuction is combined with a tummy tuck or body lift. Rather than removing as much as possible, I focus on the areas that give the most benefit and keep the body in proportion long term.

2. SIS and SIT to control bleeding

I use a standard infiltration solution (SIS) placed with a stratified infiltration technique (SIT), layer by layer, before the fat is removed. This limits bleeding and bruising, which reduces the fluid and blood that can collect afterwards.

3. Protecting the skin

I use gentle 3 mm and 4 mm Mercedes-tip cannulas and always leave a protective layer of fat under the skin: about 1.5 cm along the natural grooves of the abdomen (the linea alba and linea semilunaris), about 2 cm elsewhere, and about 2.5 cm where the skin's elasticity is poor. This layer keeps the skin's blood supply intact and the surface smooth.

4. Using energy devices safely

Each device has a specific role. I use VASER mostly, because it loosens (emulsifies) the fat gently and reduces bruising. I use Renuvion selectively, on the upper and lower abdomen and the arms, for patients with some skin laxity who do not want excisional surgery. I use laser only where the skin is thin, in and around the navel, the elbows and knees, and for the double chin, where it works best. In expert hands, used in the right place, these devices add benefit without adding risk.

5. Preventing seroma

Seroma mostly comes from damage to the deep lymphatic channels. My technique, with SIT and Mercedes-tip cannulas, is designed to protect them. I place incisions in the lowest (dependent) positions and leave them open, so fluid can drain out instead of collecting. In some patients I also use drains, particularly in men and in people with thick, darker skin. Lymphatic drainage massage starts as soon as possible after surgery, guided by the patient's comfort.

6. Qualified surgeons in an accredited facility

Surgery by a qualified plastic surgeon, in an accredited hospital with proper sterile standards and monitoring, reduces the risk of infection and of blood clots, and improves safety overall.

7. Aftercare and follow-up

Patients walk on the same day. The compression garment is worn in two stages for six to eight weeks, depending on skin laxity, and controlled, gradual exercise starts within 10 days. I follow up at 24 hours, 5 days, 2 weeks, 1 month, 3 months, 6 months and 1 year.

Your own risk factors

Smoking or vaping, diabetes, a high BMI, previous liposuction in the same area and some medicines all raise the risk. Tell your surgeon about each of these before surgery, so they can be addressed in advance.

How each problem is treated

Seroma

A seroma is drained with a needle in the clinic, followed by firm compression. For a seroma that keeps coming back, the key is to avoid frequent repeated aspirations: we either aspirate at well-spaced intervals or place a drain, always with compression, so the space can close. If a capsule has formed, a small procedure may be needed to remove it.

Infection

We identify the cause, take swabs, start the right antibiotics and drain any collection. A deep or fast-spreading infection is treated in hospital, with surgery to remove infected tissue.

Skin necrosis and open wounds

We remove only skin and tissue that are clearly dead (minimal debridement), then use VAC (negative-pressure) therapy to clean the wound and draw it together.¹ Where possible, the wound is closed early by advancing the surrounding skin, which stretches slowly under steady tension (skin creep), with anchoring sutures instead of a skin graft.^2,3,4 Once healed, scar management begins.

Frequently asked questions

Is some swelling and fluid normal after liposuction?

Yes. Swelling and some clear or pink fluid leaking from the incisions in the first days are normal; I leave the lower incisions open so this fluid can drain. A soft, wobbly swelling that appears or grows after the first week may be a seroma and should be checked.

Can a seroma go away on its own?

Small seromas sometimes do, but most need draining. Left alone, they can become infected or form a firm capsule.

Why has my skin gone dark after liposuction?

Bruising is normal, but skin that turns dark purple, grey or black, or blisters, may be losing its blood supply or have a heat injury. Contact your surgeon the same day.

Are hard lumps after liposuction a problem?

Firm areas are common while swelling settles. A lump that is painful, red or growing should be examined.

I had liposuction or a BBL abroad. Can you still help?

Yes. Bring your operation notes and medication list, or send photos on WhatsApp so we can advise on the next step. In my own practice I do not perform the traditional BBL; I perform a safe gluteal lift with ultrasound-controlled fat grafting.

What you can do now

• Do not ignore swelling that grows, skin that changes colour, or discharge that smells
• Keep wearing your garment as advised, and do not tighten it yourself
• Send us photos on WhatsApp or book an assessment at Dubai London Hospital
• If you had surgery abroad, bring your operation notes and medication list

References

1. Morykwas MJ, Argenta LC, Shelton-Brown EI, McGuirt W. Vacuum-assisted closure: a new method for wound control and treatment: animal studies and basic foundation. Ann Plast Surg. 1997;38(6):553–562.
2. Gibson T, Kenedi RM, Craik JE. The mobile micro-architecture of dermal collagen: a bio-engineering study. Br J Surg. 1965;52:764–770.
3. Neumann CG. The expansion of an area of skin by progressive distention of a subcutaneous balloon. Plast Reconstr Surg. 1957;19(2):124–130.
4. Wilhelmi BJ, Blackwell SJ, Mancoll JS, Phillips LG. Creep vs. stretch: a review of the viscoelastic properties of skin. Ann Plast Surg. 1998;41(2):215–219.

This article gives general information and does not replace medical advice. Treatment decisions are made only after an in-person examination. In an emergency, go to the nearest emergency department.